The Willpower Instinct By Kelly McGonigal

Helpful theory and practical strategies for improving our self-discipline.

This is a great little book about willpower, how it works and how to develop it. There’s tons of practical advice, as well as ingenious explanations of biological and psychological mechanisms involved.

Another important part of the book is exercises, mostly for developing self-awareness — a crucial tool for someone willing to work on one’s willpower and motivation.