The nail biting habit is hard to stop because it provides satisfying relief somehow. That can be a good thing; however, there are side effects that are not good. Some nail biters overdo it and often bite their fingernails until they bleed. This may open the way for germs to go directly in to the blood stream causing infection. Also some bacteria may enter the biter's mouth. These disadvantages may well be motivation enough to take drastic actions and stop the nail biting habit.
There are uncountable ways suggested on the Internet for breaking the habit of nail biting, as well as many other habits! Do a Google search. However, keep in mind there may be psychological factors worth looking into, such as being overly self critical, as suggested by Hand Analysis theory.
Search on Amazon.com for details and discount.
-- Stop Nail Biting.
-- Nail-Biting: The Beatable Habit.
-- Understanding Habits: A Preliminary Investigation of Nail Biting Function in Children.
-- The Habit Change Workbook: How to Break Bad Habits and Form Good Ones.
-- The 7 Habits of Highly Effective People.
-- The Power of Habit: Harnessing the Power to Establish Routines that Guarantee Success in Business and in Life.
-- The 7 Habits Of Highly Effective Teens.
-- The 8th Habit: From Effectiveness to Greatness.
-- Activating & Engaging Habits of Mind.
-- The Creative Habit: Learn It and Use It for Life.
-- The Book of Bad Habits.
-- Eat by Choice, Not by Habit:
-- Habits of the Heart: Individualism and Commitment.
-- Living the 7 Habits: The Courage to Change.
-- The 12 Bad Habits That Hold Good People Back:
-- Lick the Sugar Habit.
-- Million Dollar Habits: Proven Power Practices to Double and Triple Your Income.
-- The Anger Habit in Relationships:
-- The Power of Positive Habits.
-- Should: How Habits of Language Shape Our Lives.
-- The Habit of Being:
-- The Stress-Free Habit: Powerful Techniques for Health and Longevity from the Andes, Yucatan, and the Far East.
-- Changing Habits.
-- Winning Is A Habit:
-- The Complete Idiot's Guide to Breaking Bad Habits.
-- Understanding Palmistry.
-- How to Use Palmistry for Successful Relationships.
-- Palmistry: How to Discover Success, Love and Happiness.
-- Secrets in the Hand: Palmistry Simplified.
-- A Scientific Treatise on Palmistry.

