When you make a promise, keep it.
Success is the maximum utilization of the ability that you have.
When you are truly interested in other people, you will learn what they are interested in and if they have a need for your product. If they like you, and most people like folks who take an interest in them, they'll help you find people who do need what you have to sell, even if they don't.
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.
Winfield Scott Hancock