Biting your nails can be a hard habit to break, but one that's possible if you really want to stop nibbling.

There are some gross tasting "nail polishes" that you can apply on your nails (not matter how stubby!) that will slow you down your munching and give your nails some time to start growing. Jessica 'Nibble No More' has bitter cactus extract in it ($7.50 at jessicacosmetics.com) which is sure to stop you instantly when you taste the bitter flavor.

Keep a nail file in your backpack or purse. When you notice a snag or crack in your nails, use the file to smooth it out and not your teeth to pull it.

One of the best stop-biting tactics is to give yourself a manicure (or better yet, get one done at a nail salon, if you're paying for it you'll be more likely to think twice before munching on your professionally painted fingers!). Get a few bottles of colorful polish and nail and hand cream to keep them soft and looking pretty. In just a few weeks you're going to notice a difference…and have beautiful nails!