First days/ weeks are hard to go trough. My advice is to keep yourself busy and stay away from people and places connected to your addiction. For me (I was a drinker) that means no restaurants, pubs, festivals, birthdayparties, liquor store, wine section supermarket, etc. I also stripped my house from all the alcohol and the empty bottles, I needed a clean start.
Keep yourself busy and distracted.
And inform yourself about how to deal with addiction. There is loads of good info to find here at this forum. I will share a tread wich I advice you to read:What's YOUR plan? and this is how I did it: 2 years sober and what helped me to get there: I’m more then 5 years sober now. Not to bragg but to tell you that it’s possible and doable 
So a warm welcome to you!
If you have any questions feel free to ask them!
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