My horse won't trust me

Stand outside the stall where you are safe if he kicks. Reach in the door/gate with a lunge whip and tap his butt. Be real annoying with it and do it in a rhythmic fashion. If after about 30 seconds he doesn't move his hip away then tap a little harder. Be patient, he'll move. As soon as he even rocks his body, stop and point the whip down. Give him oh, 15 seconds and if no further response, start again. He's trying to figure out how this works.

Be careful-it is very easy with any of the videos to miss one tiny thing-like standing with the wrong foot forward-and you sent the totally wrong message. I would suggest, especially because this guy has a tendency to let his feet fly, that is at all possible you have someone who knows some NH (Parelli, Chris Cox, CA, to mention a few that are somewhat similar)help you if at all possible. If not, make sure you have someone at least at the barn with you. Stay safe above all, and if those feet fly towards you-make sure you have his head, and let him know that that is NOT tolerated. Period.

Hasn't got a thing to do with trust. Horse is the leader here, and by him feeling free to kick out at you?

I would say this has been going on everywhere else too.

Find someone close to give you some handling lessons, on how to lead, halter, and what have you.

But this has nothing to do with trusting you at all.

He is fine being lead and so on, it's just in the stable.

Does he pull when you are leading, dawdle, forge ahead? Get too close, or too far away?

Does he stop the instant you stop walking? Follow your pace when being led?

How is he when being groomed? Being fed? Being tacked? Being asked to give ground either when backed, or asked to swing? Ears forward and has a willing attitude, or is horse pissy about all of it?

And this has nothing to do with trust. Period. Horses don't worry about trust, they want a leader who they follow. That leader earned that position by being the one that can win the battle for supremacy, through attitude, or being willing to dish out HCTJM.

I found that Buck Brannaman's work is really good too for groundwork and riding.