I am a PhD student in Europe, currently in my second year, and I have some attitude problems concerning my work. I really want to work on my problem, that's fine, but what bothers me is the following. I struggle with "impostor syndrome", so I always think that I know nothing. This leads me to the thought that it's not worth meeting with my advisor, because I am afraid of saying stupid things (which happens!), asking stupid questions (which has led, after all, to the solution of many important problems!), not knowing things which I should know (but if I don't ask, it will be even harder for me to learn these things), and am just afraid of wasting my advisor's time.
You see that I know that I know that my thoughts are completely irrational, but they just won't go out of my head.
Now my advisor (currently abroad for several weeks) sent me an e-mail that he thinks that I should be more modest and that we should meet more often. While I agree with the fact that we should meet more often, I disagree with the statement that I should be more modest. Not being modest means for me (in this context) thinking that I don't need my advisor because I can do everything on my own (correct me if I misunderstand his statement). But the opposite is the case.
Should I tell my advisor about my thoughts about not being good enough, as described above? If yes, should I respond to him via e-mail (note that he's abroad for some time), or should I prefer to talk to him in person about these issues?