My advisor said that I should be more modest, and we should meet more often. Should I tell him about my impostor syndrome? If yes, mail or personal?
My advisor sent me an e-mail that he thinks that I should be more modest and that we should meet more often.


Your prompt answer:


  Sounds good!


Nothing is gained by getting defensive.

(Do you know what meeting rhythm your advisor has in mind?  What often works well is a standing, weekly meeting.  If you have no progress to report, that's okay -- it can be helpful to establish a habit of meeting regularly, rain or shine.)