Two basic rules:
First, find a simple and obvious cue.
Second, clearly define the rewards.
The Power of Habit / Charles Duhigg
Related Post
How to Win Friends and Influence People / Dale CarnegieHow to Win Friends and Influence People / Dale Carnegie
我恨我太遲才遇到這本書，如果早一點看過這本書，我應該有多一點朋友，少一點敵人。