Sometimes their advice is self centered and peevish. But it is not always that way. Knowing the difference is a part of the trick. If we do that, though, we may be shutting off one of the avenues that God may want to use. Usually the people we do this to the most are right in our own families.
Parents think children have nothing to contribute.
Sometimes it happens in other places too. But, a wise person, a great person, looks for truth where ever it can be found. He raised it, and it grew up with him and his children. It shared his food, drank from his cup and even slept in his arms. It was like a daughter to him.