What are the possible causes for having a vice?

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-T. Maine

My strongest vice is finger nail biting.

>>Correct.
 I don\'t know what causes to start the vice.

>>I don\'t know what causes me to start this vice.
 Being needy is considered nail biting\'s reason, but I had much love for parents when I was young.

>>One reason of nail biting is needing some attention.  But I received much love from my parents when I was younger.
 I tried to stop it on very many times, but I couldn\'t because when I\'m stressful, I start to bite my nail always.

>>I tried to stop it a lot of times, but I couldn\'t because when I\'m stressful I start to bite my nails again.
 Therefore, I can make conclusion. Stress make to start my vice.

>>Therefore, stress makes me continue my vice.
 When I\'m not stressful, I can stop to do.

>>When I am not stressed, I stop doing it.
 However, life is a series of stresses.

>>However, life is a series of stressors.  

I\'m in challenge always, and the challenge make stress even a little.

>>I am always in a challenge and it makes me more stressed.

 When I prepared CSAT (Korean university entrance exam), my fingers always hurt. so I applied ointment and weared the bandaids on fingers everyday.

>>When I prepared for CSAT, an entrance exam in Korea, my fingers got hurt, so I applied an ointment and wore bandaids on my fingers.
 I wouldn\'t go that far now, but It is continue.

>>I wouldn\'t go that far now, but I still go back to my bad habit.
 Now I accept it for destiny and I find the way for less hurt.

>>Now, I accept it as my destiny and find a better way so I won\'t feel hurt.