I read it when I was 15/16, along with "beyond good and evil" by nietzsche. I grew up in a religious house hold, and it really brought alot of things into question. Mostly lead to a many year long existential crisis. I also felt isolated from my peers, as I was reading these books and supporting secondary academic texts. My day to day thought process was "different". I did fall into something I would consider to be like mental masochism, where I actively tried to stretch (or tear down) my psychology and understanding using these texts.
I am now actually 36, and I don't know that deep philosophy, while some of it true, actually had a positive impact on my life.