How long does it take for hair to grow back?

i have trichotillomania, an ocd where you subconsciously pull your hair out from the roots, or do it knowingly but unable to control it. i want a thick glossy full head of hair again but i need tips on what to eat. im trying to get my five a day in- for example i had a glass of orange juice and grapes today. i'll probably eat a banana before i go to sleep too. however i know that's not enough. i eat almonds, but what other nuts are there that help hair growth? also, WILL my hair grow back if it's been pulled out? it scares me to think it will stay this thin. thank god it isn't as bad as other trich patients but i want to help myself before it's too late. even if you don't know about trichotillomania could you help me please? thankyou xx