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The proper study of psychology is not what the mind is, but what the mind does.
Every mental state exists for a purpose; to understand it, we must ask what function it serves in the broader system of behavior.
I don't listen to what people say. I just go out there and perform.
I just try to relax and stay focused because I know what I want to achieve.
I know what I can do, so it doesn't bother me what other people think or say.
I get to play golf for a living. What more can you ask for - getting paid for doing what you love.
Psychology should study how the mind works, not just what it contains.
"The mind is everything. What you think you become."
"In racing, milliseconds matter. That's why we push so hard."
The only thing that matters is what you believe in yourself.
I don't have to prove anything to anyone. There's nothing to prove.
I'm more worried about being a good person than being the best football player in the world. When all this is over, what's left is what you've achieved; what kind of person you were.
The mind is everything. What you think, you become.
I’ve had to work very hard for every title. Nothing has been given to me.
"I'm not worried about what people say. I know what I can do."
I'm lucky that whatever fear I have inside me, my desire to win is always stronger.
You can be whatever size you are, and you can be beautiful both inside and out.
The mind is everything. What you think you become.
The mind is everything. What you think, you become.
Everything is possible, and nothing is given.