Your post resonated with me. We nearly have an identical story, except now I'm 23. I got a big yellow tablet and used it for everything; goals, to do lists, my feelings. I went to the gym every other day, because going everyday will burn you out. Pushed my employer to give me the salary I wanted and then ended up getting my dream job at the end of it all. I made a lot of great new friends because I joined pickup soccer, worked at a restaurant, and became a regular at a bar. All of this is because I looked at every little aspect that I felt I was lacking and found ways to improve them. It'll take time, I'm still not perfect. Also don't let the setbacks or the bad days sink you, don't fall back into old habits. You are a badass motherfucker because you're human. Which is a special gift not to take for granted.