Someone will probably come along with better advice than I, but the main thing is knowing that no matter what trigger comes along, you don't have a choice. If you post your daily promise first thing in the morning, you CAN'T cave. You've given your word, and you are a man of your word. My second or third day when I knew I was headed to a trigger situation, I came on here and posted my promise a second time, just for good measure. Just to remind myself and my quit bros that I gave my word and I'll be damned if I'll break it.
As the saying goes, caving is not an option. Do something else. Like parputt says, shove someting else in your mouth: candy, sunflower seeds, fake dip (NO NICOTINE!!!), bark dust, coffee grounds, whatever. Excercise does wonders.
Come on here and get in chat or just read anything and everything. You'll find good advice at every turn.
Above all, remember that quitting is the most important thing you are doing right now. PERIOD. No trigger situation is worth risking your quit early on. Avoid them if you can. If you can't, have a plan to deal with them (substitutes as mentioned above, escape plan, etc).
If all else fails, you better have some numbers from folks here to call or text before you cave. Those are part of your tools. Use them. If don't have numbers yet, PM me and you can have mine.
Ultimately, just don't put that poisonous shit in your mouth. Just don't do it.