Welcome Russ! and congratulations on making the decision to be quit for good! Your story is similar to most everyone on this site - many failed quits over the years, broken promises to quit when such-and-such happens, etc. You're not alone, my friend.
Yes its normal to be more emotional at this time. You'll most likely have alot of anxiety, irritability, insomnia, some depression, lots of things like that. It is extremely difficult to go thru, not gonna lie. The good news is that it all means your body is healing, and re-balancing itself to life without nicotine.
We quit one day at a time here - ODAAT. We dont worry about quitting forever, because sometimes, thats too much to take on, and doesn't seem do-able. So dont think about quitting forever. Just promise to quit today, all day long. Then do the same thing tomorrow as soon as you wake up.
What we do here is every day, in the morning sometime, we all come here and "post roll". You will post roll with the January 2014 group, because that's when you'll hit 100 days quit, or the Hall of Fame. Posting roll is your promise to not dip that day. I recommend reading the pink "WELCOME CENTER" link near the top left of this page, and learn how to post roll.
The only advice I can give you is this: do whatever it takes to not put dip into your mouth, or nicotine of any kind. Most people use hard candy, gum, spits, and fake/herbal chew to help them thru. Exercise definitely helps with the anxiety and irritability. Whatever it takes. Just find what works for you, and stick with it.