I have experienced the same thing. Man so frustrating, I feel your pain!
What you must, must, must do is find something that you did good or at least semi-ok in the round and focus on that. Take time to think about what you did well - putting, chipping, something. Remember Hogan said he only hit maybe 3 great shots a round. Slow your swing down, don't worry about positions or this or that, just find a rhythm or tempo, go back to something you know worked at least reasonably well and just go out to have fun. Then work on what you need to work on after you play.
Its gonna be about your misses and how you handle that.
And hooking ain't such a bad thing, its better then slicing and hooking comes before drawing. I don't know, at least I went from slicer, to hooker to now a better drawer of the ball, still hook though. Not many go from slicing to great shots.
You need to find an instructor you can trust. See if there are any GSED's or GSEM's in your area, go see one of them that is what I did and I am improving. :-D