Yet another nod towards the Airsoft...
While it has already been said a bunch of times, practice makes perfect. More accurately, perfect practice makes perfect. Practice developes the muscle memory which then becomes second nature. Airsoft is cheap and safe way to practice. I used to practice on a 6"x6" sticky target from across the room. I started from low ready and brought the gun up to the target quickly. Make sure the airsoft you get is a close replica to your gun so the grip angle will be similar. While the weight, trigger pull, and recoil will obviously be different, the main thing is getting lead on target QUICKLY!!!
I would not be taking wild shots at a hostage if they were holding a loved one. Now if I in the middle of a divorce...