People rarely listen to others’ advice if they see a contradiction between the advice they receive and their own ideas. People are inclined to listen to advice that supports our own preconceived ideas:
Niles Crane: Frasier, like most patients who come to a therapist, you already know the answer to the question you’re posing. You just want me to agree with your decision and support you whether I share your opinion or not.
Source: The episode “The Show Where Lilith Comes Back” from the first season of American sitcom Frasier. In this episode, Kelsey Grammer plays Frasier Crane and David Hyde-Pierce plays Frasier’s brother, Niles Crane.