Does anyone else bite their tongue til it feels just right?

So I used to bite my nails really badly when I was little ( so age 4 to about age 9 ) and by really badly...I mean so bad that pus would come out of the sides of my nails....gross right. Anyway so after that phase and I learnt that I had to start writing more for school and also after my mums rants about how unhealthy that is I gradually stopped biting my nails as much. I then moved on to my inner cheeks and my tongue especially. Now I just find myself sub-conciously biting my tongue til it bleeds. Or when I do realise I'm doing it I bite even harder or use my nails to try and make it feel right. After a biting session, a white layer forms over the affected area....