Wastepanel is right. THere will be difficult times. We all have them. The key to success is being prepared for those tough craves. Nicotine is a sneaky, patient mistress. She knows exactly when to whisper in your ear and doesn't mind waiting weeks or even months to offer her shallow, deadly promises.
Sounds like you are making some other good changes to go along with your quit, and that is great. I eventually took advice from some of the vets here and totally rearranged by life. I'm the best, healthiest version of me that I have been in many, many years. It feels good.
You are feeling good now, and I can promise you three things:
1. It only gets better. Month after month, this battle becomes easier.
2. You will have bumps along the way.
3. If you're not prepared for those bumps, you'll fail.
Proud to be quit with you. Reach out if you need anything.