This interview with Seth Godin touches on so many topics that are important for entrepreneurs and I believe that he absolutely hits the nail on the head. You have to keep trying (which entails failing) to get to success. I'm nowhere near as successful as I want to be, but I know many, if not all, of my greatest successes and experiences have come from just trying.
This may be asinine to some of you, but you have to ask yourselves if you are really trying. ARE YOU REALLY TRYING? Are you stretching yourself on a daily basis? Are you doing things that really scare you? And not scared in the pee my pants, sweaty palm sort of way, but scare you in the way that you easily rationalize why you should not do something rather than just doing it, scare you in the way that something always comes up to help you avoid your problem, or scare you in the way that you just always happen to forget to do something. When you start procrastinating, avoiding, and fighting something you want, it might just be because you are scared.
Things get easier once you admit this to yourself and realize that it's okay to fail. It's okay to TRY to attain / win / gain something and not get it. The critical factor in the process is that you keep learning. In fact, it's better than okay, it's the first step to success. If you really want to succeed, then start trying. If you're already trying and you fail, keep trying. Finally, if you're trying and succeeding, then keep learning.
It's honestly the best part of the process.