Change, Complain or Accept...?

Most situations are really quite simple. When all is said and done, we’re usually left with three choices - change, complain or accept. 

But what if we removed complaining as one of the options ? What if, every time we heard ourselves thinking or talking negatively about a situation, we made a conscious decision to change or accept it instead ? 

Complaining is easy, doing something about it is not. But then, no-one ever grew stronger by taking the easy option did they…?