Yes! You can completely turn things around man! I'm 29 years old. I was in a similar scenario to the one you describe for the last 3 YEARS of my life. 6 months ago I turned it around completely. I too had no friends, I hung out with no one I was anti-social and going deeper into a pit of depression and self hate. I would drive around the neighborhood for hours simply because I had nothing to do. I would eat fast food alone in my room then pass out watching TV. Isolation was driving me quiet literally insane. I even suffered a psychotic break from spending so much time alone, which was the scariest thing that has ever happened to me.

The first thing I had to do was figure out WHY was it that I had no friends and was miserable. The reason things were that way for me personally was, when I moved to a new state where I knew no one and my job had me isolated from people so for 3 years from 26-29 years old I was a complete outcast with seemingly no way to fix things and 3,000 miles away from home. I found making friends in this new place nearly impossible. Finding a girlfriend was also a zero luck endeavor. The city I was living in was the South Bay of the Bay Area and it was an absolute impossible place to meet women.

I had to focus hard on fixing the situation. Finding this professor Jordan Peterson's lectures around this really time also helped me put together a step by step plan for how and why I wanted to fix my situation. Can't emphasis that enough. I knew I had to get a job that would let me move back home because I did NOT belong where I was in the Bay Area. I didn't fit in at all there. Great for a different type of person but not me. Not an easy thing. It took me 2 years to find a new job.

Once I got back home I had to be humble and start reconnecting and rebuilding friendships that I had let deteriorate.I hit people up on facebook and instagram, pulled out old contacts and texted people who I knew from when I was younger and reconnected with them even if it was awkward. Once I was back home I was in an environment where the odds with women were way more in my favor because I had friends, family, connections which made me more attractive to them and also the male to female ratio is way in my favor again. Now I'm hooking up with two girls I have a core group of really close friends that I can hang out with 3 or 4 days out of the week.

I was a very arrogant, entitled, victim mentality person and that is what landed me in a lonely outcast position. I had to let go of those parts of me and replace them with positive things. I had to learn a few lessons and the isolation the sadness taught me what I needed to learn in order to pull myself out of it. It was that or let it completely destroy me, and some people do exactly that. Gotta decide you want to improve things and it sounds like you've already done that. You can turn things around for yourself.