Your first day quitting will be just like your 10th, 100th, 1,000th, and every other day that you don't put that trash in your mouth. Only thing that changes is the number.
You use your resolve, your pride, and your commitment to yourself and to us that you won't use again. And like sever said, there is no luck involved. You either quit, or you don't. I'm glad you made the decision to free yourself from the slavery. I'm quit with you today.