Ok, spend time with your horse. Theres step 1. Step 2, build an intimate relationship through play and riding trust. Step 3, lots of rewarding for good behavior and discipline for mistakes. Step 4, find the level your horse expects you to be, then top it, hold the same level of expectation for your horse. Step 5, just talking to your horse seems to make them love your voice and your presence. Romeo and I talk all the time and hed rather be with me than another horse.
Horses are angels without wings!