About Failure
Not accomplishing anything doesn't make you a failure, and anyone who says otherwise is lying. You're also not a failure when you fail at something, as odd as that sounds. Believe it or not, failing is more important than succeeding.
If you succeed at something, you have set yourself to a goal and accomplished it. Congratulations, you've earned it. If you do your best but fail, however, you gain something far more important than accolades: you gain experience and knowledge. Winning is nice, but it doesn't teach you anything. Failing helps you identify weakness in yourself, and in doing so gives you a chance to overcome them. Nobody ever learned anything by succeeding.
There are precisely two ways to be a failure: by never learning from your failings, or by never making the attempt. Failing doesn't make you a winner, nor should it, but you're not a failure as a person unless you give up trying. As long as you still believe in yourself, you are not a failure.