Don't look at failure as final, it's simply a step in the process - Try to remind yourself that your failures are rarely final as the word failure implies. Rather they are lessons to gain insight into how to do things better the next time around.

I would challenge you to find one occurrence in your own life where you have not actually gained something from a past mistake? It might take some heavy thought here, but as you ponder the situation I think you'll see what I mean. Even if it was as simple as learning what not to do the next time around, that's still valuable.

The next time you find yourself faced with something that doesn't go as planned take the time to ponder what happened. Gain knowledge from the experience that you can apply so that things work out better the next time around.

Success in most everything comes from an ongoing commitment to learning and applying what you learn. Our shortcomings can offer up valuable experiences when we choose to view them as lessons as opposed to failures.