It is hard Karen, at first. But it is easier to quit smoking than to go to Chemo treatments, and its easier to quit smoking than to have to tell your kids you have cancer. Quitting smoking is a choice, and it is a choice that you have to keep reiterating all day long. "I choose to be smoke free for this hour, this day, this week, or this month and this year! It does get easier, it gets a bit easier each and every day.
Make sure you get a quit kit together for yourself, candy, gum, straws, licorice, munching snacks. Use cold water for craves. Rearrange you routine as much as you can, all the habits you had when you were smoking associate with smoking. If you change your routine, your brain creates new associations and NO cravings! Try it!
All of a sudden you will wake up one day and realize that you did it! It is sooooo worth the effort.
Hang in there! Hang in here and read read read, theres lots of help here in these posts. Read all you can, they have all been written by real people who have struggled to get free of the awful addicition that smoking is.
Keep on going Karen, you will be so glad that you did!