Decide before practice that you'll bring your fullest effort from the first repetition to the last. That commitment should guide your actions in practice.
During:
Keep asking yourself, "Am I all in?" If the answer is no, immediately raise your commitment, focus, and intensity on the next effort. Every repetition deserves being all in.
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?