In general, I always liked fiction, and I've never been interested in anything like motivating or "coaching" (Robert Toru Kiyosaki - "Rich Dad Poor Dad" or
Jen Sincero - "You Are a Badass: How to Stop Doubting Your Greatness and Start Living an Awesome Life").
My favorite foreign writers are Ernest Miller Hemingway and Kurt Vonnegut, Jr. I guess they did a great impact on me, especially when I was a kid.
Nothing compared to our classics literature like Lev Tolstoy, Fyodor Dostoevsky.
But they are not easy to understand and you can get confused in heroes. I am closer to Leonid Andreyev ("Judas Iscariot", "The Red Laughter"), Andrey Platonov ("The Foundation Pit"), Mikhail Bulgakov. From modern writers, I can advise Victor Pelevin and Anton Sorokin.