Hello! 
I’m 30 and my story is similar to yours, except I have spent the last year or so teetotal 
It seemed really scary to start with, and it’s not all been plain sailing, but I’d say it’s worth it.
There is loads of information and support here. The FAQ thread has some pretty good links to have a read through.
Use the search bar, read, check in, reach out when you need to!