Do you read and gestate on the knowledge? Or do you actively implement the mindsets and habits they offer?

I personally read a few books over and over again to ingrain them in my head but I also have a 1% retention rate plus a terrible memory.

Good books:

Meditations by Marcus Aurelius
Discourses by Epitectus
The Subtle Art of Not Giving a Fuck by Mark Manson
No More Mr.Nice Guy (this has an action plan to improve yourself) by Dr.Robert Glover
Models by Mark Manson (Great dating advice with an action plan)

All great books which have habits and mindsets you can implement.