Answer:
Most serial entrepreneurs don't know when they are beaten and so never admit to failure.
And there is something to be said for the idea that there is no failure only learning. Eddison said that in all the things he got wrong there were no failures just lots of ways he'd proved certain things didn't work.
He's right, failures are only such if you allow yourself to call them such. Lots of top entrepreneurs continue to have thigns go wrong but they learn from them and start again.
So the hint here is that you refuse to see it as 'failure' and rather as learning (which you have paid for).
A recent study at the Uni of Pennsylvania found that the most common ingredient to entrepreneurial success was OPTIMISM. Keeping positive.
So learn from the mistakes, strive to be opimistic and start all over again...