It's less of a 20 year olds book of lifehacks and more of a science based approach.
Power of Habit book changed my life, quit all drugs and video games. Now I just read nonfiction books.
Plus these get boring, I climb up the hedonic treadmill. Movies and video games get boring.
This year I read/listened to 30 nonfiction books in philosophy, History, and science. It's been extremely enjoyable and rewarding.
My best advice is to put down bad books after 20 or 30 pages.
That said, I agree 100% about giving up on books early and often.
_One Small Step Can Change Your Life: The Kaizen Way_ by Robert Maurer
_Mini Habits: Smaller Habits, Bigger Results_ by Stephen Guise
Both are short reads, and the Kaizen book is also in a nice small form factor that you can stick in your back pocket. These books emphasize the importance of making even the smallest change possible.
Cue - Routine - Reward
With an additional 300 pages of weak, mostly theory-driven anecdotes about how corporations apply this at scale.
I'd be really interested to know how you applied this to your personal life.