I'd probably do a lot of the same things, but slightly better. Maybe I'd commit a bit harder to learning the guitar or the piano. I'd be both ecstatic and miserable... my relationship with my family has definitely taken a turn for the worse since I got older. And I'd know myself better, and I'd find it harder having to do what is expected of me. At the same time, I'd probably play a lot less videogames, not because I regret spending time on them, but because I've already spent a lot of time on them. I'd be anxious about meeting my internet friends. Would I really run into them a second time? I'd be able to be more proactive about handling my depression, and have a more stable teen/young adult life. I'd avoid the biggest regret of my life, but also wonder... just how different will my life be from that butterfly effect? I'd probably miss out on some of my best friendships.

There's too much uncertainty to it. I wouldn't want to go back now. If I do go back to the past, I'd rather wait until I die. Then going back to the past and re-optimizing my life would be much more worth it.