Insatiable cravings used to trouble me, I jotted down with pen and paper, all my precursors, which mostly turned out for smoking e.g. strong tea/coffee, after lunch/dinner, long conference calls, driving car etc. Recognising them early helped a lot !. I was prepared for cravings so to say !
First few hours of quitting it was penalising feeling in mind. I want to smoke, and I am penalising myself by not smoking. I started thinking the other way, you are enjoying quitting and quitting is helpful for my enjoyment.
I experienced and share with almost all my dear and near ones that - "World is same, as it was, when I were smoking, ... however now my world is changing for better"
I used to go for multiple times brushing initially, that keeps good smell, and cravings away.
My old hobby reading books physically (not on tab or computer), I brought into reality. I purchased many good books, and read it....enjoyed reading !
You are responsible for change, and world is changing for you !