Hi Mat and welcome,
Glad you are at day 4 now when you read this. Step by step, day by day you will become a little bit stronger. What has helped me a lot was reading here and learning about my addiction and what other people are doing to get sober and stay that way.
I made a kind of sober plan. You can read it here 2 years sober and what helped me to get there: I still use it.
No matter how long we are sober we are all just one drink away from relapse. So we all have to put some work in our recovery every day. I’m sober for more then 5 years now, but still here a lot: reading, writing and still learning. I do not like to be addicted to alcohol, but I do like my recovery and how it made me grow as a person!
I wish you the same! 