I made a big mistake being too kind and patient with my mare, that I forgot that whether or not they are in transition, respect has to be there all of the time. As a teacher I think of new horses as my students. I come in, I set the rules, demand respect, have a bit of a heavy hand for the first bit to establish who's "boss", once this is established I can have some fun with them. Being kind and patient is great, but respect for you has to be there all of the time, or it will give him the idea that you will tolerate him stepping all over you and doing what he wants. Catch it quick and establish your authority!