Honestly I used to complain a lot until I sat down and thought about the million reasons I have to not complain. I'm not fully there but I'm working on it.

Reasons To Not Complain
You Have A Roof Over Your Head.
You Have Life.
Your Limbs Are Still Connected To Your Body.
You Can Walk, Talk and Think For Yourself.
You Have A Job
You Have Family
You Have Goals And Dreams
You Have Good Friends
Complaining Never Made Anyone Better.