Look Back in forgiveness, forward in hope, down in compassion and up in gratitude.
Ask yourself a question: Is my attitude worth catching?
I wouldn't say 'most' people are prone to negativity. I think it's probably that most people allow negativity to color their thinking, depending on circumstances, but I also believe most people make the necessary efforts to return to positive thinking as quickly as possible.
A true leader produces more leaders.
If you don't like the way you are, don't worry about it. You can change the way you are.
The greatest of all mistakes is to do nothing because you think you can only do a little.