My brother was nervous about football so his on-again off-again nervous habit of humming without realizing it popped up again. After about two and a half weeks of constantly reminding him that he is humming, he hasn't stopped. I don't know what to do, he gets so annoyed when anyone tells him. Teenagers, what are you gonna do with them, right? Anyway, please contact me and let me know what I have to do to help him.