KMS - you've taken the first step and that's one of the most important things in your battle against nic.
As hard as it sounds to go the whole day without any nicotine, you can do it. Break it down even further - if saying 24 hours is hard - break it down to hour increments. Tell yourself, "I can last the next hour without a dip." Last the hour, and then promise yourself for the next hour and so on.
If you are close to caving, jump on the chat, post, read, post. take a walk, take deep breaths. Do ANYTHING you can to keep the dip out of your lip.
It's hard, but I promise you, it WILL get better and you will see a huge difference.
Even if you don't think you are strong enough, KNOW that you are.
I was in your shoes 10 days ago. It was HELL, but I did it and I am here to tell you that it is possible!!