SGIME, try to go with the failures and not let them deter you completely. I've had tons and tons of them but kept on starting again and suddenly it stuck. But reading about your struggle brings it all back to me. It really is very hard to go cold turkey. But you can do it.
SEA, I think it's all well and good waiting for that 'perfect week' in which to quit but for me that moment never came, in fact just became a way of me postponing the inevitable.
My brother's partner downloaded a load of those quitting smoking t.v. ads where people dying of lung cancer talk about it. Every time he fancied a puff he put one of those on on his computer. I did something more in my head, I conjured up a horrible moment of being diagnosed with cancer and the hatred I'd feel for myself that I might have caused it by smoking.
notasheep, yes, that keeps happening to me at the moment too. Strange considering we've both gone for a good month now with rarely thinking of fags. Maybe this is a common phase? I do think I've heard of people starting again at the 3 month quit mark. And I know I've found myself drifting back almost despite myself. But those cravings I'm having are nothing like I remember having in the beginning ... grusome!