i don't bite my nails but heres a tip on how to keep your nails long keep yourself busy ask someone like a sister or brother to help keep you busy. don't play sports they break your nails you can walk and excersize but any sports that you need to use you hands in other then baseball is unacceptable
(i have long nails myself at the age of eleven and no one can believe it find someone to talk to on your free time)