잘되면 제 탓[복] 못되면 조상[남] 탓
속담
literallygiving credit to oneself[one's bliss] if something goes well while blaming the ancestors[others] if it goes wrong
To blame others when things go wrong.
뜻풀이In Korean
일이 잘 안될 때 그 책임을 다른 사람 때문이라고 생각함.