How strong is the evidence? 6,707 self-help practices, graded
As of 26 October 2026 · Version v1
IX Coach graded every practice in its library by the kind of evidence behind it. Each grade is our reading of published research. The grading is editorial, not a systematic review or a meta-analysis. The grades are as of 26 October 2026. A grade says what kind of evidence exists for a practice. It does not say how much a practice will help you, so read the caveat on each practice page before you rely on one. The five grades are kinds of evidence, not a ranking. Each has its own limits, and each practice has one grade.
The five grades
- Randomized controlled trials — 908 practices (13.5%)
Backed by randomized controlled trials or by meta-analyses.
A trial shows an effect in the people, setting and time it studied, but it does not show that you will get the same result or how long the effect lasts.
- Established clinical practice — 719 practices (10.7%)
Established clinical or therapeutic practice, used as part of care by trained professionals.
Established use in clinical settings does not by itself show that a practice works for a given person, and it does not say how strong the research behind it is.
- Observational studies — 2,498 practices (37.2%)
Backed by correlational or observational studies, which follow or compare people without assigning them the practice.
Studies like these can show that people who use a practice tend to fare differently, but they cannot show that the practice caused the difference because users may differ in other ways.
- Plausible mechanism — 2,016 practices (30.1%)
A plausible mechanism, with limited direct outcome data: the reasoning for why a practice should work is sound, but few studies have measured the outcome.
A plausible mechanism is a reason to think a practice could work, not evidence that it does, and the reasoning can turn out right or wrong only once someone measures the outcome.
- Practitioner experience — 566 practices (8.4%)
Practitioner experience or self-report, with no formal study behind it.
Experience and self-report record what people found useful, but they do not show that the practice causes the result people describe or that it works for everyone who tries it.
Practices by topic and grade
Practices in each topic, by kind of evidence. The last row counts all topics. Shading shows each cell's share of its topic, so a darker cell is a larger share. Select a number to open that group.
Where the evidence is thin, contested, or did not replicate
2,582 of 6,707 practices (38.5%) rest on a plausible mechanism or on practitioner experience rather than on direct outcome testing. 6,680 practices carry a written caveat, which is on that practice's page.
- For many decisions, going with your gut outperforms lengthy analysis
Replications have been mixed; the effect is real in some contexts and absent in others.
Affect Forecasting: Why You Mispredicted How You’d Feel
- Option overload: cut the number of choices you face
The original jam study has had replication problems, and pooled meta-analytic estimates of choice overload are small and highly conditional — dependent on the type of choice, the comparability of the options, and whether the chooser already has a preference.
Choice Architecture, Made Practical
- Pre-commit to a hard option limit
The jam study has faced replication challenges in some contexts; the size of the effect depends on domain, expertise, and whether the chooser has clear preferences.
Choice Overload, Made Practical
- Make an irrevocable decision about a recurring temptation
Ego depletion as a mechanism is contested — a large preregistered replication failed to find the effect.
Commitment Contracts, Made Practical
- Record: capture main ideas, not verbatim transcripts
Mueller & Oppenheimer’s findings have not always replicated cleanly; subsequent studies show more mixed results.
Cornell Note-Taking: A System for Learning, Not Just Recording
- Stop mid-sentence so tomorrow’s start is easy
Zeigarnik effect replication has been mixed; it’s less about memory enhancement than the motivational pull of incompletion.
Daily Rituals: How Creative People Structure Their Days
- Simplify complex choices to prevent comparison fatigue from enabling decoys
Choice overload has failed to replicate in some follow-up studies; the practical discipline of filtering before comparing is useful regardless of whether overload specifically reduces satisfaction.
The Decoy Effect — How an Irrelevant Option Changes Your Choice
- Understand what the marshmallow test really shows
But a much larger, better-controlled replication (Watts, Duncan & Quan, 2018) found the association between wait time and later outcomes was roughly half the original size and largely disappeared after controlling for family background, income, and home environment.
Delayed Gratification, Made Practical
- Slice and dice the task
The Zeigarnik effect in particular should be held loosely — it is a much-repeated finding whose replications have been inconsistent, so treat it as a plausible framing for why starting helps rather than as a settled result.
Eat That Frog, Made Practical
- Use posture to scaffold a productive cognitive state
The popular "power posing" hormone claims (Cuddy et al.) failed to replicate robustly.
Embodied Cognition: How Your Body Shapes Your Thinking
- Three good things
Effect sizes are modest and vary by person; some replications are weaker, and benefits fade if the practice becomes a rote checklist.
Gratitude Journaling, Done Well
- Praise process, not innate ability
Process-praise findings are real but modest and not uniformly replicated; do not assume one phrasing change produces large or lasting outcome differences.
Growth Mindset: The Honest Version
- Eating from smaller dishes
Plate-size and portion effects appear in the literature, though effect sizes are debated and some specific findings have failed to hold up.
Hara Hachi Bu, Made Practical
- Frame desired behaviors as identities, not actions
Subsequent work has shown mixed replication across different behaviors; effects are reliably positive but modest.
Identity Priming, Made Practical
- Fill the break with mild mind-wandering
This specific finding has had mixed replication, and the optimal break activity is still debated; treat “mild task” as a good default, not a proven rule.
Incubation: Why Stepping Away Solves Problems
- Laser: defend focused attention
The smartphone-presence finding has mixed replication; the broader principle — remove cues to reduce switching — is well grounded.
Make Time, Made Practical
- Design the habit to be no-fail even on your worst day
The concept of regulatory resource depletion (ego depletion) is contested — a major preregistered replication failed (Hagger et al., 2016).
Mini Habits, Made Practical
- Skip the hormonal "power pose" promises
The original power-posing hormonal and risk-taking effects largely failed to replicate in a larger, pre-registered study; later work supports only a modest "felt power" / self-report effect.
Posture and Confidence, Honestly Explained
- Adopt expansive posture to shift subjective confidence
The hormonal mechanism failed to replicate in adequately powered pre-registered studies.
Power Posing Revisited
- Channel attention to the relevant concept before the ask
The broader social priming literature had notable replication failures after 2011.
Pre-Suasion, Made Practical
- Take recovery breaks before willpower is exhausted
The original ego-depletion glucose studies have mixed replication; break effects on performance are better supported on attention grounds than on willpower grounds.
Self-Regulation Failure and Ego Depletion
- Distinguish functional from dysfunctional procrastination
The "active procrastination" finding is disputed; subsequent work has had mixed results, and the construct validity of measuring "active procrastinators" as a genuinely distinct group is questioned.
Structured Procrastination, Made Practical
- Convey power
Be skeptical of strong "posture changes your hormones" claims — those power-posing findings largely failed to replicate.
The Charisma Myth, Made Practical
- Accumulate positive experiences
Broaden-and-build is well cited but some aspects (e.g., specific positivity ratios) have failed to replicate.
DBT Emotion Regulation Skills, Made Practical
- Make them feel they already own it before asking them to keep it
Some replications find smaller effects than the original.
The Loss Frame: How Framing Shapes Decisions
- Eliminate recurring micro-decisions with standing rules
The judicial decision fatigue study has faced replication challenges and alternative explanations (lunch breaks confound the finding).
The Not-To-Do List
- Use discipline to build the right habit
The classic "willpower as a depleting fuel tank" model is contested and has failed to replicate cleanly; the safer claim is that habits reduce the effort a behavior needs.
The ONE Thing, Made Practical
- Practice the "see it, own it, use it" reappraisal
Brooks’s research specifically tests anxiety-to-excitement reappraisal, and it is worth knowing that the "say I am excited" finding has replicated inconsistently in later work — treat it as a promising technique rather than a settled one.
The Stress-Is-Enhancing Mindset
- Read stress as information, not instruction
The original Schachter-Singer study has methodological concerns and mixed replication; the core insight that arousal interpretation affects experience is broadly supported but the specific two-factor mechanism is contested.
- Sleep on important decisions
The claim that unconscious thought outperforms deliberate thought on complex decisions has not held up reliably in meta-analysis.
The Three Bs of Creativity: Bed, Bath, and Bus
- Arousal Reappraisal: "I’m Excited, Not Anxious"
Brooks’ findings have been replicated but are also contested in some replication attempts; effects are real but may be smaller and more context-dependent than originally reported.
The Yerkes-Dodson Law: Finding Your Optimal Performance Zone
- Start before you are ready to create a pull back
Direct replications of the memory-advantage finding are mixed.
The Zeigarnik Effect: Using Task Tension to Stay Motivated
- Periodically forgo a comfort or convenience
The "ego depletion" model — that self-control is a finite resource strengthened by exercise — has had significant replication failures.
Voluntary Discomfort: The Stoic Practice of Chosen Hardship
- Track when your willpower is high and low across the day
Ego depletion as originally formulated (Baumeister et al.) has faced replication challenges — a large multi-lab replication found near-zero effects.
The Willpower Instinct: What Self-Control Actually Is
How the grades were assigned
IX Coach graded each practice by the kind of evidence it rests on, using the five grades on this page. The grading is editorial: it is our reading of published research, not a systematic review or a meta-analysis. Each practice page links its checked sources where a link exists, and the research library holds the wider reading behind the topics.
Practices carry a written caveat that says what the evidence does not show, and the number that do is given above. Grades can change as research changes, and this page shows the date the grades are as of. A practice appears under one grade only, so the grade counts add up to the library total.