It got me in the habit of breaking everything I saw down into the smallest possible pieces and studying how those pieces could be put together different ways. I applied that method to what I was learning about training horses. Eventually I became what I call a born again horseman. Finally the lessons Sue and other horses had been trying to teach me in those early years became crystal clear. Breaking isn't communication.
Relentless repetition is just another form of breaking.
Louder isn't better. When you run out of tactics, call it a day and learn some new tactics rather than resorting to violence or profanity. Use pressures to shape a horse but never take them past the point where the horse is comfortable. Anything that elevates a horse's excitement level is dangerous and if you fight with them when they feel they are in danger, it only makes the danger more real. And I could go on.