You have made some mistakes and you may not be where you want to be, but that has nothing to do with your future.
You are the most influential person you will talk to all day.
Where you start is not as important as where you finish.
To get what you want help others get what they want
Rather than shrinking away from your problems, grow bigger than them.
I'm constantly amazed that owners and managers of all businesses don't train their people to call the person who pays by credit card by name. It definitely makes the customer feel good and will be a factor in bringing them back to your place of business.