Welcome to TS! That is one hell of a story.
You’ve definitely taken the first step by figuring out that you have a problem. Finding this forum is a great start too, there are a ton of amazing people and a lot of advice already here that you can search for if you don’t feel like waiting for a response.
I was also terrified of what life would be like without alcohol. I can very much relate to the analogy of some people viewing sobriety as losing a close friend (alcohol) at first.
Once you stop drinking you will see that life is actually far, far better without alcohol. I promise you this. It is much easier to deal with life, it just takes a little getting used too.
I hope you feel better from the fall and I hope you stick around. Start with today as day one and take it one sober day at a time; they will add up before you know it.
Here’s another thread with a ton of useful info: