Harry Dresden wisdom:
"If you can’t stop the bad thoughts from coming to visit, at least you can make fun of them while they’re hanging around."
Good plan. Just shining the light of awareness on disturbing, untrue thoughts makes them wither on the vine.
Writing out your thoughts longhand and analyzing them is a sure way to find peace and happiness.
According to his biographer, John Nash rid himself of schizophrenia by learning to police his thoughts.