Hey patrick, welcome! so tell us about yourself, when/how did you start, how long you been dipping, and why you finally decided to quit for good.
I see you figured out how to post roll, nice job!!! that aint easy when you're fighting thru the fog during the first couple weeks. Stay on this site as often as you can in your first weeks, and read everything you can.
If I can do anything at all to help you in your quit, just reply or shoot me a private message.
I'd recommend you drink lots of water like you said, but also stock up on lots of distractions for your mouth, like jolly ranchers, atomic fireballs, sunflower seeds, bubble gum, and fake/herbal chew. Fake chew has really helped me get thru some tough craves in my 200 days, I still keep a can around to this day. Some guys dont like it, but IMO, if it keeps you quit and doesn't have nicotine, then by all means, use it! its up to you.
Also exercise of any kind really helps the anxiety and irritability... walk, run, lift weights, shoot hoops, yoga, whatever you're into. Just find what works and find your quit groove.