Set default rules for willpower-intense situations

A pre-decided rule requires no willpower at the decision point — the decision has already been made.

Why it works

Heuristics reduce cognitive load by converting a repeated decision into a rule. When a rule is established in advance, the moment of temptation does not require deliberation — the rule fires automatically. This is how experienced practitioners in any domain reduce the cost of discipline: they’ve made the decision so many times that it’s no longer a decision, it’s a procedure.

How to do it

1. Identify the three situations where you most often make decisions you regret.
2. Write a specific rule for each: "If [situation], then I [specific action], no exceptions this week."
3. Review the rules in advance of high-risk situations, not in the middle of them.

Evidence

Implementation intentions research shows that if-then plans reduce reliance on in-the-moment deliberation and improve goal attainment. Pre-commitment research finds structural rules outperform in-the-moment decisions. (observational)

Rules work when the situation is sufficiently predictable to match; highly novel or complex situations may require deliberation that fixed rules can’t substitute for.

Sources

• Gollwitzer & Sheeran (2006), implementation intentions meta-analysis, Advances in Experimental Social Psychology

Common mistake

Making the rule so general ("eat healthy") that it provides no guidance in the specific temptation moment — the rule must specify the exact behavior in the exact situation.