One often learns more from mistakes than from success. Don't let yourself be stopped by the mistakes you have made. Mistakes build character if we learn from the mistakes we make. 

The world's best businessmen have gone bankrupt an average of three times. They did not give up, but learned from their mistakes and moved on. We should all do that. The Bible says: 

"For a righteous man may fall seven times and rise again."

Proverbs 24:16

Is it maybe time to get back on your feet?