"It's not what you look at that matters, it's what you see - i.e. compare it to, something worse or better, that determines whether you are respectively grateful and happy or ungrateful and bitter."

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You cannot control all of what happens to you, but you can control your attitude toward all of what happens to you...You can choose to be happy and grateful rather than disappointed and bitter, by focusing on how it could have turned out worse but didn't, rather than how it could have turned out better but didn't.

— Brian Tracy