How do you grow up?

So, I used to like to spend my time playing video games and watching TV, and that is all I've done this past decade, but it's become rather boring and sort of embarrassing. I want to move onto something else but the problem is though that it's pretty much all I know.... What do I spend all my time on now? I'm almost thirty so does that mean I have to get into a relationship with a girl and have kids and all that weird stuff? I don't want to do that yet. It seems like such a chore!

Where do I go from here? How do I become mature? What's the process - in point form preferably.

Thanks,
Anon.

Thanks for the input, >>4! （　´∀｀）

Hmmmm.... ｢(ﾟﾍﾟ)...

I'm thinking about it and there is NOTHING going on around me but my crazy parents and I don't think I'm capable of much. In fact the only thing I like doing now is exercising. No, I'm not joking. I really do like to exercise. I've got one of those pull-up and dip stations you see in prisons, speed bag and a bench for squats and bench presses setup in my garage. All of which - besides the weight plates - I found on the side of the road. Score!

So I like to workout but the thing is I can't stand watching sports and am socially awkward, so jumping into one of those fantasy league things or joining some team is OUT of the question. And that just depresses me.

This is going to be a lot harder than I anticipated. _{That's what she said xD}

I feel kind of like that guy from Office Space. I just want to relax and sit on my ass all day... Then lift some weights and hit the speed bag. That is not very mature though, is it?