Before practice, don't just think about finishing the workout. Decide what high-quality training will look like today. What will enable you to have a quality practice session?
During:
Periodically ask yourself, "What's the quality of my training right now?" If it isn't where you want it, immediately raise your attention, effort, or execution.
After:
Did today's MindRep help you? How did today's MindRep help you? Do you want to own it and make it a consistent part of your training?