Hello and Welcome to SR!
It's great that you are here this morning. The first few days can be a little tough, but they definitely get easier so hang in there.
Spend some time reading on SR and also pop into the October 2016 thread, you will find others who have also decided to stop drinking/using this month.
Dee should be along to share a great link about recovery plans.
Stick around here today for support. You can do this, and I promise it is worth it!