The Way of the Superior Man by David Deida is a great follow-up. The guru stuff is sometimes overwhelming, but there are good ideas in that book.
There is also a fantastic summary/teaser of the book on FightMediocrity (YouTube channel).
It's one of those that's hard to grasp, more of a lifetime read, when you gather more and more experiences, so that the suggestions make more sense.
Those two books, "Models" by Mark Manson and "Slight edge" by Jeff Olson probably changed my life the most.
Getting "Models" and "Slight edge" samples on Kindle now. Thanks for the recommendations!