Feeling guilty towards your parents?

This weekend I heard two stories from young male adults about feeling guilty towards their parents (father) because of the choices they want to make in their adult live. I thought ...very interesting in this time and age.  So I asked them:
“How come you cannot talk about this subject  to your parents? “
They said: “Fear for disappointing them and quilt for not being the perfect son.”
When I asked more questions, I heard that most of their thoughts and fears were not real but felt real according to their assumptions. And what they had experienced as a child.
But now we are adults...Unfear yourself.... Let’s learn to talk more as equals about our mutual expectations. And check our assumptions by being explicit in our questioning. F.i.” What does disappointment mean to them?”