How can i stop biting my nails?

i bit my nails all the time even when i don't realize it. how do i stop. i've tried the bad tasting polish but it doesn't work. what does??

It's Ok I bite mine to i have 2 tricks #1 Put fake nails on for awhile #2 use something like lemon juice or hot sause on ur fingers

I've never bit my nails in my life not even when i was in kindergarten; i have always had long nails but my 2 sisters have always nawed away at theirs so this is what id suggest:
I agree with Hananhbanana95 because i too have had acrylic nail put on and there is no way you can bite them. unless you do bite them and then they break in half on your nail and that should teach you to never bite them again :P Or you could try to releive your stress because nail biting links to having stress. Good luck