Yielding is harder than people realise because it requires humility.
e.g. You book a plumber to come and he doesn't turn up. Your instinct is to ring up and complain but instead you ring to let him know that you have to go out and you arrange a different time. At no point do you lay blame or complain.
He knows that he never turned up and so do you. The fact that you did not get upset demonstrates a different kind of strength.