You don't have to settle. It's a choice you get to make every day.
Gifts are not favors. If you expect something in return, it's not a gift.
Soon is not as good as now.
The only purpose of customer service is to change feelings.
By all means, fire the customers who aren't worth the time and the trouble. But understand that the moment you insist the customer is wrong, you've just started the firing process.
By definition, remarkable things get remarked upon