Do you have enough strength to quit Smoking/Drinking?

I don't drink or smoke that much that i have to quit for the better. I generally do this stuuf socially, coz these kinda stuff are required when u r at a social event as everybody's doing it, and if u don't do it, u r kinda left out, it dosen't go like that nowdays. And i laso have stong will power, and i have promised to myself that i will not get addicted to this habit ever, even if it means to cut down on my socializing...