Hey Anji,
I was a daily vino consumer before DD and my plan of action was to eat normally but cut out the wine, and then start the DD. While I was on the week cutting out the wine I read the book from cover to cover and then that weekend I went out, bought everything I would need for the diet and made a weekly meal planner.
For me, one step at a time worked and it also helps to be organised.
The attack phase is by far the hardest - my body fought hard against it, I craved sugar, chocolate, wine, bread, everything carb to the point where I thought I would start clawing the walls and cave in (and I had a headache with it) and then on the third day it was like someone had flicked a switch - the cravings were gone, the headache was gone, I wasn't constantly ravenous and felt fabulous.
My other trick was that if I did get a bad craving, I would paint my finger nails. Sounds ridiculous, but you can't do a lot with wet nails!
Just take it one step at a time and you'll be fine
Cheryl x