Atomic Habits

Atomic Habits is the yang to Tiny Habits yin. They complement each other. Tiny Habits to get started, Atomic Habits to develop mastery.

From personal experience, the material on ensuring habits aren't stale and aren't producing outcomes is the most important part of the book. Building habits isn't difficult. Building the right habits requires considerably more effort. Habits which aren't ultimately producing desired outcomes are indistinguishable from “bad” habits, regardless of the moral content of the habit.