"You only have control over three things in your life;
1. The thoughts you think
2. The images you visualize
3. The actions you take (your behavior)
How to use these three things determines everything you experience. If you don´t like what you are producing and experiencing, you have to change your responses."
From the book "The success principles - How to get from where you are to where you want to be" by Jack Canfield.