Welcome Brit! You’ve made a courageous choice - acknowledging your problem takes courage, and acting on it by talking with others takes commitment. Only your first day and you’ve already made progress 
I read in my recovery workbook that addiction is a disease of escape. We have spent years running: from boredom, from fear, from self-doubt, from ____. We’ve surrounded ourselves with addictive escape routes in our brain and behaviour. Eventually though we realize - they’re hollow. They don’t go anywhere. And we’re alone.
The cure for addiction is connection. Connect with yourself. Connect with other people. Start to live your life sober. Learn about sober living and how people do it in recovery. Read as much as you can here, and explore some of the resources you find. This thread is helpful:
Resources for our recovery
You are making the single biggest, most important, most challenging but also most rewarding decision of your life. It will not be easy, but remember: every sober minute, every sober hour, every sober day is a win. Just take it one day at a time, and most important: never give up. Ever.
You are a good person, you matter, and you belong. It’s nice meeting you - looking forward to walking the journey with you 