Positive psychology

According to the Mayo Clinic, "Positive thinking just means that you approach unpleasantness in a more positive and productive way. You think the best is going to happen, not the worst."

According to Harvard Health Publishing, positive psychology is otherwise known as the science of human flourishing, the search for satisfaction and contentment that's within everyone's reach. Positive thoughts and positive attitudes—what we call positive thinking—can lead to direct, positive health outcomes.

Positive thinking

See also: Positive thinking and Optimism

According to the Mayo Clinic:

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Positive thinking doesn't mean that you ignore life's less pleasant situations. Positive thinking just means that you approach unpleasantness in a more positive and productive way. You think the best is going to happen, not the worst. Positive thinking often starts with self-talk. Self-talk is the endless stream of unspoken thoughts that run through your head. These automatic thoughts can be positive or negative. Some of your self-talk comes from logic and reason. Other self-talk may arise from misconceptions that you create because of lack of information or expectations due to preconceived ideas of what may happen. If the thoughts that run through your head are mostly negative, your outlook on life is more likely pessimistic. If your thoughts are mostly positive, you're likely an optimist — someone who practices positive thinking.

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Donald Trump's father Fred Trump was enthralled with the power of positive thinking and strongly inculcated this type of thinking into Donald Trump.