I know exactly how you feel, everyone hits a wall sometimes. I really like books by Jocko Willink or David Goggins for that kind of mindset. You can find their core ideas on the Headway app if you want to get the gist of their philosophy quickly before buying the full book. There is also a great list of
https://makeheadway.com/blog/motivational-books-for-men that I found super helpful when I was feeling unmotivated last month. It covers everything from fitness to mental toughness and career goals. I found that the "March Theory" is also a cool concept to look into for building momentum. The key is to start small and be consistent. Just do one thing today that makes you feel productive, even if it is just listening to one book summary.