I want to put together a timeline like @yegg had once, not sure where it went since his blog switched to Medium. But I've been working on side projects since I was at least 16, I have tried to build competitors to services like MailChimp, Facebook, etc. It's a ton of failure honestly, but it has been a fun ride. My biggest failure is due to lack of focus on ONE project, which I have changed recently and built the habits required to stay hyper-focused on just one or two things. I am doing contract work to help fund myself building and hiring a team to build a massive & global side project now. Who knows if it will get traction, but just like the others, it is merely a FUN experiment.