Smile please.

The art of making someone feel and heard is seemingly simple , learning their name is really easy , calling them by their name makes that person really happy. 

Mentioning that you are grateful for what that person has done to you by saying Thank you, makes a difference .

Or just having a smile on the face and greeting them will also do fine.

 This is how you can get wise without getting your ego inflated.

Next time you are in a restaurant just learn the name of the waiter and just see how he serves you later.

Next time when you rent an auto just thank him for a safe ride , it might just make his day great.