I have a restaurant and in my day to day passing I do an inventory of the skills I gain and maintain in dealing with the partons.

First I need to tell you that I once (Thank god) suffered from a very bad case of depression.  I had a hard time going place , see and talking to people, and just old plain participating in life.

Increasingly I improved greatly, and am aware of the loss of social skills, patience and tolerants I can have with people. So this restaurant has been a great therapy as well.

So each time I successfully deal with a difficult parton I mentally document my accomplishment.

This is not to say that most times when a person orders a meal and while waiting for it to be prepared ( we cook most meats to order) prep cooking side orders daily. 10-15 minutes later ask if I mind if they change from a pork chop dinner to a fried chicken dinner, I don't want to run out of there screaming. But I have successfully learned to so. No that would be just fine, it'll just take a few more minutes. 

I can now take a order change, serve their meal, ring them up, say my standard "Thank you " have a good evening, and not hold a grudge the next four times they come in and make a difficult order, change in the middle of my cooking it and so on. 

I am EXCEPTIONAL!!!