"Imagine if after a really good retreat, in which you gained a lot of insight, you came away from it thinking: “I’m really great! I bet nobody else did as well in meditation. In fact, I should be a teacher.” When this happens, you are ignoring the context in which your experiences arose: the help of the teacher, the group support of the other meditators, and everything else. You have reified yourself, and then it’s a problem."
B. Alan Wallace
The Four Immeasurables:
Practices to Open the Heart by B. Alan Wallace,