I found horsenalities helpful when training my horse. She's a super right bran extrovert. I just thought she was crazy.
I'd never ridden a horse who was so driven by wanting to feel safe.
This desire to be secure led her to being extremely
buddy sour, insecure in new places, and very "claustrophobic." If I held her back, she came unglued. I was told by a Parelli person at a playday I attended to give her what she wanted until she didn't want it anymore
. I was told when my horse didn't want to stand still/acted like a nut, never hold her back or punish her. Frustration = aggression. Anger = game over. Right brain extroverts want to feel safe with you. They can't if they think you want to eat them.
So I was instructed to circle tightly, faster than she wanted to, until she wanted to stop, and then some. It worked miracles!
After two years together, she's starting to find security with me. She's a very kind, affectionate, hard working horse. She's also nervous, reactive, and fearful, but that's getting better as she gains confidence. I have just to be patient, never get frustrated, and give a lot of reassurance.