Everyone of my fingers are tore up from biting n picking away rough skin from my cuticles.Whats wrong with me?

Everyone of my fingers are tore up from biting n picking away rough skin from my cuticles.Whats wrong with me? I have done this my whole life. I am coming out of DENIAL and realizing that I HAVE A PROBLEM. I will pick and bite my cuticles till they bleed. The pain I'm so use to and the pain I get from it jus feels natural to me. Im a waitress and hide my hands. and if I have the weekend off I wont touch my fingers so they hav time to heal before my next shift. As I drive I pick and bite at my fingers without even knowing Im doing it. Im so sad and need a second opinion if I should get medical attention for this because to be honest, I cant stop. Tear* Im so sad..