I've been working on startups since I was 16. I'm 22 now and I've never built or made anything close to what I'd consider a success. In the last 4 years I've worked extremely hard, dedicating nearly all my free time to planning, building, learning, networking and reading about startups/business with no success. What I find frightening is just how hard it is to judge ones ability, especially when it comes to something as complex as ones ability to create a successful business. I personally believe I have what it takes, but I have to accept all evidence would suggest otherwise. We've all seen the contestants on game shows such as X-Factor that truly believe they're something special when they can't even sing on pitch. Maybe that's me in my own domain. Maybe that's you?