Shape Up
Ryan Singer
It Doesn't Have to Be Crazy at Work
Jason Fried & David Heinemeier Hansson
Hooked
Nir Eyal
Designing Data-Intensive Applications
Martin Kleppmann
Four Ways of Thinking
David Sumpter
Tiny Habits: The Small Changes That Change Everything
BJ Fogg
User Friendly
Cliff Kuang & Robert Fabricant