You only control one thing. That thing is how you think. There might be things that you can influence some of the time – but you don’t have control of anything other than how you think.
If you only have this one thing that you control you might as well understand it well and take better care and control of your thinking.
Decide how you want to think. Then do what you need to do to think that way.
This gem came to me from Brain Tracy’s book, “The 100 Absolutely Unbreakable Laws of Business Success”.