I have a habit of chewing, ..

sometimes I even draw a little blood, it's really gross. When I was younger I used to chew on my nails and now I just bite around them.

You have to start by saying how ugly your fingernails are! it will give a bad idea about you to people you meet. Go to a beauty center and get your nails some manicure, then try to get yourself occupied and more especially avoid getting nervous, when you're nervous try to apply some nail polish on your fingers, choose colors that you want, and when you want to remove the polish remember to not scratch it but use a polish remover! keep your nails beautiful, it's an important thing! hope it Will work for you.

I do the same thing I need to stop

Put Tabasco sauce on the area.

i did the exact same thing, i went to the dentist and they told me how much germs were all over ur hands, and i eventually grew out of it, and kinda got embarassed about how rough and nasty my fingers looked

If you really need help, put clear nail polish around your nails on where u bite, and if you still do it, put pepper in the nail polish and put it over your skin where u bite