Behavioral & Psychology Math

Scientific frameworks for habits and decision making.

Habit Formation Timeline

Est. Days to Automaticity0

Weighted Decision Matrix

Compare two options across 3 metrics with custom priority weights.

Option A
Option B
The WinnerA

Cognitive Logic & Habit Math

The 66-Day Myth vs. Lally's Data

Popular psychology claims it takes 21 days to form a habit. However, the 2009 study by Philippa Lally at UCL found an average of 66 days, with a range of 18 to 254 days depending on the complexity of the behavior.

Overcoming Decision Fatigue

By using a Weighted Decision Matrix, you bypass the emotional fatigue of complex choices. By assigning mathematical weights to metrics like 'Salary' vs 'Freedom', you arrive at a logically superior conclusion.