self-fulfilling
/ˌselffʊlˈfɪlɪŋ/adjective
- (of an opinion or prediction) bound to be proved correct or to come true as a result of behaviour caused by its being expressed（想法, 预言）肯定正确的; 本身自然会实现的：
expecting something to be bad can turn out to be a self-fulfilling prophecy.
把某事想得很坏就可能会变成必定实现的预言。