Best line: The lesson is that there will be mistakes and problems on any path to success.

My wife and found that out while trying to start our restaurant. If you're thinking of starting business I would get with a group like SCORE (https://www.score.org/) or contact a college to find an incubator.

Pretty much also explains after his early setback why Sam later didn't feel bad for any department stores WalMart put out of business.