I'm 61 and started therapy when I was 20 (finished when I was 55). It is all worth it; if I had to go through that life of hell again, I'd do it to get to where I am now. I did not marry until I was 39 so you have a few years yet to worry about that :-)

Grab an interest, any interest (I started with reading; was reading 5+ books a week, mostly young adult fantasy novels) and worked outward from there.