A few of mine that are constantly repeated in my head:
Heels down thumbs up
If I feel myself get frustrated or angry tie the horse and walk away
Most mistakes my horse makes are my fault...breathe and figure out what did I do wrong.
Sit up, shoulders back, hands down, chin up. GOOD JOB!!!!
Look between the ears, look down and you owe me a cookie (from my first ever trainer from 3 years old to 10 years old and yes I was required to bring cookies to the next lesson)
"If you look down that's where you'll end up"
And with Caleigh under the instruction of my current trainer "INSIDE LEG INSIDE LEG GUIDE HER....THERE YA GO FEEL THAT?! Inside rein outside leg sit up!!! THERE YA GO!!!"