Trust me, I've done this many times before! If you're having a hard time hang in there. With each passing day you will gain a new confidence and pride in yourself. It is such a great feeling to wake up in the morning, take a deep breath and suddenly realize "I didn't smoke yesterday!". Even if it's only one day, that is a great accomplishment because getting past that first few days is the hardest part of the battle. Hang in there.