What did you learn? That's the most important question to ask yourself. I also tried running a startup that got nowhere. What I learned is that I like spending

What did you learn? That's the most important question to ask yourself. I also tried running a startup that got nowhere. What I learned is that I like spending most of my time behind a computer, programming. Thus, I decided I was better off joining someone else's startup so I could spend all day programming. I'm a lot happier that way. Perhaps there's something in the process that you really enjoyed? Can you do just that piece in someone else's startup? Do you believe you'll be more successful working in a team when you're doing what you do best, and someone else is running the company? I think you can, and with some self reflection on what you were good at, I think you'll find a great direction for your future career.