This is a great and underappreciated point: the person giving the criticism has a lot of power in determining whether or not you take it personally. I would add

This is a great and underappreciated point: the person giving the criticism has a lot of power in determining whether or not you take it personally. I would add that having good mentors who give criticism in this way also helps you to internalize the separation between yourself and your work, so that it's easier to take harsh criticism later in life.