Welcome! I'm a writer as well. I've written a horror book before (which is actually my most successful book) but I tend to focus more on psychological dramas.

If you do want to write my best advise to you would be to write a little bit every day. Just keep pushing yourself on a daily basis even if you want to have a day off. Before you know it you'll have a first draft staring back at you.

Am following. Good luck!