Human beings experience a wide variety of repetitive thoughts about themselves and their lives, not all of them negative. Reminiscing, savoring, anticipating, and problem-solving are positive examples of repetitive thoughts, and go some way ot explaining why we have the propensity to engage in repetitive thoughts.
Some types of repetitive thought are unhelpful though, even harmful. Rumination and worry are two key forms of unhelpful repetitive thought and use of these can predict anxiety and depression. They are maintainance factors in conditions such as generalized anxiety disorder and depression.
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