Snack monster

I have hit my one year mark and have gained 20 lbs. I snack constantly and at first I was okay with the weight but now it's affecting my pockets in a different way. I am constantly throwing out clothes because they are too small and continuously replacing them. I am attempting to curb my appetite but i absolutely love candy. It even crossed my mind to take up smoking again but the smelly clothes, hair, and breathe is too much to bare. Any suggestions?