Habit stacking explained — attaching new habits to existing ones

Habit stacking is a behaviour change strategy developed by James Clear (Atomic Habits) that links a new desired behaviour to an existing established habit. The formula is: 'After I [CURRENT HABIT], I will [NEW HABIT].'

Why it works

The existing habit acts as a trigger for the new one, eliminating the need for a separate decision or reminder. The new behaviour is 'stacked' onto a routine that already reliably occurs. This leverages the existing neural pathway of the current habit rather than building a new one from scratch.

Examples

• 'After I pour my morning coffee, I will write three gratitude entries.'
• 'After I sit down at my desk, I will open my task list before anything else.'
• 'After I brush my teeth in the evening, I will do 5 minutes of stretching.'

The key to effective habit stacking

The anchor habit must be highly reliable (you do it every day without fail). The new habit should be small and immediately achievable — the goal is automatic performance, not an impressive new behaviour. Use our free monthly habit tracker to monitor the chain.