I think I should be more organized and productive.
I think I could make a better movie this.
I think we should change the review system.
I think someone needs to do something about the broken bridge.
I think this should be done that way.
Crib. Complain. Think. Nothing translates to the change you want to see unless you stop and start acting.
Side Note: Thinkers are in abundance throwing their opinions around. What the world needs (and more urgently than ever before) is actors. Actors who can start acting on the issues that trouble them.