Statistics indicate that most smokers who try to quit fail in their first week.
But according to BBC, a new type of blood test could soon help them kick the habit.
Researchers used a blood test to determine how people break down nicotine. Smokers that broke it down more quickly craved more cigarettes and found it harder to quit smoking.
So, the blood test helps determine the best therapy to successfully stop smoking.
Currently, the test is only being used for research, but scientists say it should be developed for wider use.