It's never too late to start going out and meeting people.

Here's a short story and I normally don't put much info about myself on the Internet but this is for you so, screw it.

I'm an old fart now, when I was your age though I was one of those people that everyone wanted to hang out with. I have no idea why honestly, I was socially awkward and a bit too sarcastic for my own good. Regardless, I had something that people liked. I played in several bands and opened for quite a few "big" bands. This made me more desirable to hang out with (honestly, I felt that was an artificial reason.) Before all of that, I was a hermit. I stayed in my room all day drawing and later, learning to program computers. Thus, I slowly slipped back into that behaviour after about 10 years of being the cool guy. Everyone made new friends and moved on once I stopped answering the phone or writing back (postal mail style back then.)

I remained that way for a long freaking time while still, like you, wanting to get back out there an live a little. I moved to a new country, raised a family, got divorced, survived anxiety, depression (both which caused my divorce eventually), homelessness and then, got back out there. Because being alone eventually started to chip at my sanity.

Spending less time on the computer was the key to everything. It's what I do to unwind but there are other ways, like taking the bus downtown and watching people or, stopping into a club for a quick drink. Simply saying hello to someone or, waving to someone who seems friendly tends to work. It's a brief social interaction that can lead to a conversation at times. Do you like music? Find some local clubs and go see a local band. There are literally hundreds of opportunities to meet like-minded people at those venues. If that seems like it would be an uncomfortable situation, try the meetup website, find things you're interested in and go to a meetup. That site's main goal is to help folks like us gain a more social life.

Get out there, OP! I believe in you.