I'm really struggling, I need some help I think?

[Bowwild]

These are confidence builders for me:
1. Try to mimic, as closely as possible the shot you expect. I shoot from my deck which is 17' high at 3D deer.

2. If the ground won't destroy your arrows, at the end of AM hunts I'd shoot an arrow at a deer range spot on the ground. Same for PM hunts, shoot an arrow when you are settled in...except, try to shoot that arrow where you DON'T expect a deer to walk over. I had one spook years ago from a practice arrow.

3. I agree completely with Vesty, the first poster in this thread. Focus on the spot you want to hit rather than thinking about the whole deer.

Lots of studies have been done that bowhunters don't mortally wound and fail to recover any more deer than those who use other equipment.  Biggest and very scientific was the MN study more than 25 years ago.