JH
Jonathan Haber
Prochaska & DiClemente

What are the stages of change and how do you use them to build better habits?

Meet yourself where you are, not where you wish you were

Short answer

The Transtheoretical Model (TTM), developed by Prochaska and DiClemente, proposes that behavior change moves through five stages — precontemplation, contemplation, preparation, action, and maintenance — and that strategies effective in one stage often backfire in another. The staging framework is well-validated; the prescriptive matching of "stage-tailored" interventions shows promising but mixed results in trials.

Most change advice assumes everyone is ready to act. The Transtheoretical Model’s central insight is that they aren’t — and that trying to push action-stage strategies on someone who is still contemplating reliably produces resistance, not movement. Knowing which stage you’re in changes what to do next.

The practices (8)

Why it works

Mismatched interventions backfire because they create reactance or demand skills the person doesn’t have yet. Precontemplators don’t need action plans — they need raised awareness of the problem. Contemplators need decisional balance, not willpower scripts. Correctly staging yourself directs effort to the leverage point that actually moves you forward.

How to do it
  1. 1Ask: "Am I not thinking about this change? Thinking but not planning? Planning but not acting? Actively doing it? Maintaining it?" — your answer places you in a stage.
  2. 2If you’re in precontemplation or contemplation, focus on exploring pros and cons rather than building systems.
  3. 3If you’re in preparation or action, focus on concrete skills, cues, and commitments.
  4. 4If you’re in maintenance, focus on relapse prevention and identifying high-risk situations.
Evidence
Observational

Staging instruments from TTM research reliably classify people into stages and these classifications predict who moves forward and who relapses. Stage-matched intervention trials show better engagement and dropout rates.

Honest caveat: Stage-matched tailoring improves engagement but has not consistently produced larger behavior-change outcomes in RCTs compared to general advice; staging is a diagnostic tool more than a guaranteed pathway.

  • — Prochaska & DiClemente (1983), "Stages and processes of self-change of smoking", Journal of Consulting and Clinical Psychology
Common mistake: Assuming that because you want to change, you are ready to act — wanting is contemplation; acting requires preparation steps that build specific skills and environments first.
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