nail biting

so i am thinking about this. and today luc had his hands in his mouth the whole day pretty much. i tried redirecting i tried to find something to keep his hands busy, but he was just doing a lot of thinking today, so it was just kind of chronic. so the question is, do i care? i did tell him to wash his hands, because he had been playing with the dogs. i feel like i am going to have to accept this and just let him come to me if he wants to stop. is that the best strategy. most nail biters seem to complain that the only problem they ever had with it was others judgement of it. i did always bite and pick at my nails, maybe it is genetic. maybe it is a comfort to him and that is okay? i am not sure how i feel about it, but i find it kind of hard to ignore and i juts want to pull his hands out of his mouth. so yeah, i guess it bugs me. i am not sure how to hide my feelings about it. do i need to hide my feelings about it? i am not sure.