Bro. Dont worry about this being your last chew EVER. Just worry about making it to tomorrow. That's the key attitude to have around here. Just quit for today...then tomorrow, do it again, and so on.
Thinking about FOREVER regarding ANYTHING is pretty daunting. When I think about the fact that my wife will be the only woman I bang FOREVER, I get a bit depressed (I can only imagine how she feels). However if she wanted to GET. IT. ON. Tomorrow, I would be excited just like the previous thousands of times I've given her the best 4 inches of her life, because I'm living in the NOW and not thinking about FOREVER.
Perhaps not a great example but trying to deviate a bit from the canned responses you will surely get.
Seriously though...read the welcome center at the top left of this page and read up on how to post role. In a nutshell, each morning you post a promise to yourself, your quit group, and every man, woman, and he-she on this site that you will not use nicotine of any kind for just that day. Once you make it through that day...do it again the next day, etc...
Sounds easy, but I think you know it will not be, but do know it will be always be worth it.
Also, you never quit before...you just stopped for a bit. If you really had quit...you wouldn't be here.
But...you are.
Welcome.