To offer a counter-point, I was running a consulting business at 17 (OK, a little later) went from hack to hack and didn't even know I was failing to learn and improve myself. Ran up debt, and went through what in retrospect looks a lot like bouts of depression. Now, I'm going on 30 in my first "real" job and I feel like I'm making up for lost time.
I don't do something unless the profits are clear. I once had $3,000.00 stolen from me, so I've learned early on to avoid anything too risky. And I'd rather make pennies doing something I love than dollars doing something I hate. It's absolutely different for everyone! But I'm confident you've probably learned a lot from your endeavors and have more respect for money. It's an interesting thing when you first start dealing with money...yikes...sometimes we have to learn the hard way.