Hello and welcome, Newbies 😀.
I think the best motivation for those of us with children is to do it for them. Mine were (young) adults when I stopped, and it's my biggest regret that their childhood involved a mother who drank. I'd give anything to turn the clock back and give them a drink-free childhood, but obviously I can't.
Have a good look around on this and previous incarnations of this thread, and you will find all kinds of advice about how we all 'did it'. Some will conflict. I recommend replacing as much of the routine of drinking as possible with something less harmful. I favoured AF wine, in a proper glass, to replicate opening the bottle and relaxing in the evening. I also swear by hypnosis tracks in a nice warm bed, so that any insomnia (very common at first) is at least pleasant to go through. I tried to involve as many senses as possible, with new bedding and nightwear, smelly oils for the bath and bedroom, the tracks themselves (listened to through sleep headphones) and a backup of easy-watch TV series in case sleep just won't come.
Many people love 'quit lit'. I felt it reminded me of drinking, which made things worse, but clearly it helps others, so find what works for you and do it. It's a pick and mix, really. We all got into this in our own different ways, and will have different ways of getting out of it.
Expect vivid dreams for a while, and learn to love them. I missed them when they stopped, as it was like having a free cinema pass while they lasted.
Don't worry about food - indulge yourself if you want to. You can only give up one thing at a time, and you will probably crave sugar.
Take high-strength Thiamine (Vit B1) to help your brain get over the first couple of months. It's cheap and easy to obtain, and whilst the vast majority of people don't get brain damage from stopping, it is possible, and for the sake of taking vitamins it's not worth the risk.
You will get there. All you have to do is give up one thing, and you can have everything else. If you don't, you get to keep one thing, and give up everything else in the end. It's up to you. It's not always easy, but we are all here, and the lovely Sid wants you to succeed too, so don't let him down.
We are going to have a Christmas toast to fellow shipmates. It would be lovely to have you on board for that. All you need is a glass of something non-alcoholic to raise on Christmas Day.