How do you not let someone down?

Question

is it bad to or is life full of conditioning disappointments

Answer 1

well dont be a douche bag is really the only way

Answer 2

Under promise and over deliver.  It's a cliche, but there are so many people going through a mundane life, that it is very easy to go a little above everyone else and make a difference.  By just doing little things, things that they don't expect, they will never forget it.

  Or just make sure you are smiling at them every time they look at you. It's contagious.  ;)