I read a lot. I didn't used to, but over the last couple years I made an effort to change myself and I'm happy to report that I've succeeded.

On People & On Sales/Persuation

  • The Laws of Human Nature by Robert Greene
  • Think fast, Think Slow by Daniel Kahneman
  • Seeking Wisdom by Peter Bevelin
  • How to win friends and influence people by Dale Carnegie
  • Antifragil by Nassim Taleb
  • The power of habit by Charles Duhigg

Time management

  • Make Time by Jake Knapp and John Zeratsky

On Startups & for Founders

  • How to Start a Startup, by Y Combinator
  • Zero to One, by Peter Thiel
  • Essays, by Paul Graham
  • The Hard things about Hard things by Ben Horowitz

On Company Building

  • Rework, by 37 Signals
  • Principles by Ray Dalio
  • The Messy Middle by Scott Belsky

On Design and product development

  • Sprint by Jake Knapp, John Zeratsky, Braden Kowitz.
  • Designing products People Love by Scott Hurf
  • Intercom on Product Management
  • Product Manager HQ (Blog)
  • Getting Real, by 37 Signals
  • When Coffee and Kale Compete: Become great at making products people will buy

Feel free to share any recommendations of your own!