Hell yea man we got this shit! Something I did that I really think will help me along the way and could potentially help others is writing down your thoughts, reasons, etc in a notebook, computer doc, napkin, whatever.
Day 1 I opened up a work document and just typed and typed everything that came to my head, listed the reasons I am quitting and how they are affecting me, I wrote the benefits of quitting, I yelled at myself, copied links of various cancer stories and pictures that really had an impact on me. Got EVERYTHING about the quit out of my head and typed, now I can use this document to my advantage. If there ever is a time I am feeling weak, or not feeling as passionate about my quit, I can open up the word document and see how much pain the fuckin dip had me in and really remember that I can NEVER go back.
Thought I might as well share this idea with everyone and hopefully it can help at least one other person.