Hi hopeful! Welcome to this forum!
There are lots of people here who have been exactly where you are. There is no lack of sympathy and hand-holding here waiting for you.
Why don't you journal your progress and ask for feedback as you go.
The first three days are the worst. If you read through the two threads "I'm going cold turkey..." and then "Kicking the Ox parts 1 and 2, and now 3", you'll see lots of withdrawal stories over the past 6 months or so, lots of struggles, lots of triumphs.
This won't be easy, but it will be SO worth it.
FT