I'm looking for book recommendations in the topics mentioned in title.

I often find myself feeling down and not being able to accomplish anything, and the tendency has been increasing.

I cannot even work on my hobby projects, because I'm just staring at the screen and my brain is not functioning, which leads to launching a game or watching YouTube videos and waste time.

I cannot find the way out of this madness, and my last resort is to find some books that might help with my issue.

I don't wanna rely on search results on the internet, because I don't trust random compilations of "read these 10 books to be productive".

Well, this is optional, but in case the book you recommend indeed helped you, I'd be curious how permanent the impact was for you, if that makes sense. I know mostly it depends on the person; it's me who has to make the effort, not the book. But I'd be curious how easy it is for you to consistently maintain what you learned from the book.

Regarding the format, it has to be in epub. And I'd very much prefer DRM-free books, price doesn't matter. If the only good books are all DRM-enshittified, that sucks, but I'll consider that too if I have no other choice.

Thanks in advance if anyone can help with recommendations!