Quitting smoking is tough, any suggestions?

I am 9 weeks pregnant and have been trying to quit smoking. I've cut down to 10 or less a day. I used to be 1-1/2 pk smoker a day for 10 years. It's extremely difficult for me....even cutting down to 10 or less, and that has proven tricky, but I've done that. Any of you have any advice on how to quit? I know it's important, I don't need people telling me how it affects me and the baby....I've heard all that before. Anyone in the same boat, or have been?