Great choice!!! I like your attitude. But, it's not really a "challenge" as much as a decision. You decided you are quit today. We're not just "seeing if we can do it" or "giving it a shot." We're quit...period.
We take things one day at a time. But when we post roll, we eliminate using nicotine as a possibility for that day. Then, we wake up and do it all over again.
Read all you can. Understanding addiction is the key to fighting it. PM if you need anything. You got this, brother. YOU CAN DO THIS.