Good decision. Yeah, it might be tough for a bit, but cold turkey is the only way to quit anything. Weaning yourself off is a road paved with failure. I've quit weed, alcohol, and the toughest of all, tobacco, and I did all of them cold turkey. Just decide that you no longer do that, don't focus on the "I'm trying to quit." No, you simply quit, and you don't do it. As stupid as it sounds, every minute you don't is a minute that you didn't, and eventually they become days, weeks, and years.