I had gone for years without sex, and tbh it wasn't that bad. I had been single for three years, after the first year I adopted a kind of "well, if it happens it happens" mindset. I've heard that's something that people actually are encouraged to do in therapy, I think they call it "journaling" or something.
and then I started to apply those fixes in real life. I didn't go to therapy (didn't have the money) but I would write down my thoughts, look over them, see the flaws, fix them on paper. I figured out what was important and what wasn't. tried to be positive, social, move forward in life. I was working on myself and processing a lot of bad stuff.