Be Truthful: no lies, no exaggerations, no manufactured helplessness
Say what is actually true — including when the truth is "I don’t want to" rather than "I can’t."
Why it works
Lying or exaggerating — even in small, socially comfortable ways — has two costs: it leaves the self-concept with a small deficit each time, and it creates a frame that doesn’t match reality, making the interaction harder to navigate honestly. "I can’t come" (when you mean "I don’t want to") specifically trains both parties that your limits are capability-based rather than preference-based, which tends to produce challenge-and-workaround dynamics rather than acceptance. Saying "I’m choosing not to" is more honest and often more respected.
How to do it
- Check statements for capability framing that is actually preference framing: "I can’t" vs. "I’m not going to."
- When declining, be honest about the real reason if you are comfortable — or simply honest about not sharing: "It doesn’t work for me" is complete and true.
- Resist exaggerating distress to obtain compliance: "This is literally destroying me" for a moderate inconvenience trains the other person to discount your actual crises.
Evidence
Honesty is associated with lower psychological distress and stronger interpersonal trust; deception — including well-intentioned social lies — is associated with relationship quality erosion over time in communication research. (observational)
The evidence is on honesty and disclosure generally; the specific cost of small capability-framing lies to self-respect is a clinical observation rather than a separately studied finding.
Sources
- Kelly & McKillop (1996), consequences of revealing personal secrets, Psychological Bulletin
Common mistake
Confusing honesty with bluntness — FAST’s Truthful applies to what you say, not how you say it; the GIVE skill covers how to be honest while remaining gentle.
Practice this with IX Coach
7 days free, then $40/month (~$1.30/day).
More practices for FAST: DBT’s Skill for Maintaining Self-Respect in Relationships
- Be Fair: include yourself in the fairness you extend to others
Apply the same standards of fairness to yourself that you would to someone you respect.
- Apologies: stop apologizing for existing, wanting, or having limits
Reserve apologies for actual harm caused — not for having needs, feelings, or opinions.
- Stick to Values: act consistently with what actually matters to you
Before compromising a position, check whether the compromise conflicts with a core value — and hold if it does.
- Use self-respect as the outcome measure — not just whether you got what you wanted
After any difficult interaction, ask: "Do I respect myself for how I showed up?" — not just "did I win?"
- Balance FAST with DEAR MAN when the relationship and the goal are both at stake
Use DEAR MAN for what you want, GIVE for the relationship, and FAST for yourself — and know which to weight when they conflict.
Related concepts
- Dialectical Behavior Therapy (DBT) Skills, Made Practical
The four DBT skill sets, the mechanisms behind them, and an honest read on the evidence
- DEAR MAN: DBT’s Skill for Asking for What You Want Effectively
Seven steps for asking, refusing, and negotiating without burning bridges
- GIVE: DBT’s Skill for Preserving Relationships During Difficult Conversations
Four relationship-preserving behaviors to use during any difficult interpersonal interaction