at some point, you (or a friend) will have a bad experience when asking for help. This is very, very rare, but I do occasionally hear that an instructor or tutor has made a student feel bad by telling them they should already know how to do something, or has acted surprised at their lack of knowledge. In the unlikely event that this happens to you, the thing to remember is that this person has behaved insensitively, and that you don’t want to let one insensitive person (or perhaps an ordinarily sensitive person who’s just having a really bad day for some reason) put you off.