I did the patch and Zyban, and I had no intense cravings, no moderate ones, only the occasional mild one that I was able to banish with a "No, I don't do that anymore!" Less than a year after I quit, I stopped thinking about it regularly.

So, use a crutch if it helps. Crutches help you heal so you're stronger than you were before you used them. I admire folks who quit cold turkey, but it didn't work for me. I'd always find some way to sabotage myself. Give yourself ever opportunity to succeed that you can.