I stop the very minor things like a horse moving in the stable when I have told it to stand. Moving when tacking up or rugging them (this is all done when they are in the stable and I rarely ever tie them) I correct with voice or, by using a finger against their chest.
They have to stand back when I am feeding - there is no need for a stick, body language will do it.
I will not tollerate door banging and that gets an 'angry' reaction from me. I will stop what I am doing and go into attack mode at the culprit.
I never mind if a horse walks forward as I mount, several reasons for this. First, I worked in racing for many years and when legged up the horse was always walking. Secondly it is easier on the horse's back and thirdly it is easier for me now I am older and hips are stiffer!
I Europe horses are taught to lead so their shoulders are level with yours. I do not consider this disrespectful nor that they are taking leadership. I positively hate a horse being behind me when leading, you cannot see what it is going to do and if something happens behind it could slam into you.