Prov. You cannot rely on other people to do things properly for you. (Sometimes right is used instead of well.) I asked my son to chop the vegetables for me, but he's cut them into chunks too small to use. I should have known: if you want a thing done well, do it yourself.Laura wouldn't trust professional auto mechanics, and so did all her own car repair. "If you want something done right, do it yourself," she said.