It's not just the lessons learned from it. It's how you conceptualize of failure and how you work your way through it to success. Sometimes failure doesn't happen because you make a mistake. Sometimes it is a natural phase on the way towards success.

When I am asked about starting a business, the first piece of advice I give is "your business will fail. It will run out of money. If you want it to succeed you have to be prepared to run it for a while after it has failed."