It's hard to reply to the OP. Mostly because I, like many here probably, can relate quite well.

I'd wager a guess that he's in his early twenties, struggled with depression through puberty and has currently found stable ground with a nihilistic perspective that helps him get through the day.

If that's the case then (hence the ~25 year comment) most likely he'll learn to build a perfectly healthy life on top of this stability.