I think I've been mocked too many times on the Internet for being a jack of all trades but master of none. And in real life... if I share a project I'm working on I feel like I've let people down when I don't finish it (so I've stopped talking about my hobbies anyway). Plus, maybe I should worry, before another decade of my life passes as a flat line.

On the other hand, excessive worrying hasn't really brought me anything.