I enjoy reading motivational books, some of my top picks are:
The Power of One More: The Ultimate Guide to Happiness and Success - Ed Mylett
Can’t Hurt Me: Master Your Mind and Defy the Odds - David Goggins
Never Finished: Unshackle Your Mind and Win the War Within - David Goggins
Atomic Habits - James Clear
The Four Agreements - Don Miguel Ruiz
75 HARD: A Tactical Guide To Winning The War With Yourself - Andy Frisella