Distractions are a solid bet. Be proactive do not make it easy on nicodemon, become a moving target. Change your name, side step your die hard smoking friends, prepare for a triathlon, take up tennis, bowling, walking, swimming, hiking, going to movies or theater in the day time rather than at night, find another room in the house to make phone calls from, move your computer to another room or wall, get rid of that smoking chair or replace it with another, go to work early or go in later. Develop new routines, patterns and activities.
Please find that smoking is something that you can happily live without. Find that you can begin to quit thinking about coming down with lung cancer or emphysema. Realize that quitting is a goal well worth achieving. It makes a statement about you.