How Do You Approach a Plateau?

i was always really, really good at kind of going back in my head and visualizing the training a and identifying the mistakes i was making. The goal for me was always to be very, very specific and identify exactly what they were doing like ogs. So now i know i can't let him control my hand, or if he grabs my hand, how id break the grip, or how do i free it so that i can still do what i want?