Nocebo-effect

I guess you've heard of the placebo-effect. 

I feel that the opposite, the nocebo-effect, occurs more often than we realize: merely believing that something can do harm causes the harm we fear. 

That's why I repeat "I love you" silently when meeting someone I expect to dislike.

(Are you inspired and would you like to say "thank you"? > https://www.sustainabledecisions.eu/thanks)