nice fucking decision, duck. seriously. it takes a lot of guts to quit. it takes big fucking balls to stay quit.
the first three days are the worst. you'll slowly climb out of the fog, the nic bitch will start to quiet down (but not completely), and life will re-calibrate to a new, fucking-glorious normal for you.
have a plan, and have support. tell your wife, kids, family, workers, loved ones, the stripper in your lap. everyone and anyone. it's tough to cave when everyone would know you're a weak willed pussy. make sure you have plenty of seeds, gum, candy, fake dip, beef jerky. whatever you need to keep tobacco out of your mouth.
drink lots of water and exercise.
stay close to the site and read, post, chat your way through craves. there is nothing more important right now than quitting. if you get nothing done during a day other than not dipping, it was a good fucking day.
and it gets better, my friend. so much better. you'll spend more time with loved ones instead of sneaking off to throw in a lipper. you'll (eventually) get more sleep because you're not staying up late for your "me time" coughdip timecough. you'll go hours, then days, then weeks without thinking about dip. you'll find that the only thing tobacco did was fill a void that it created in your life. you dipped to ease the withdraw symptoms that tobacco created in the first place. you're breaking that cycle, and the nic bitch doesn't like that.
man up. you have the tools at your disposal, now YOU have to quit. you did this to yourself long ago and now this is the price that you pay.