I just love Goggins’s take on pain signals to the brain, viz., that you can ignore them if you choose to do so. That’s just your brain telling you to stop, it hurts. You can choose to ignore the signal. Don’t let your brain talk you into stopping, that eight reps is enough, that your legs are too sore from yesterday’s run to do squats, or that you need more rest or sleep or food or whatever excuse your brain comes up with. Just don’t fucking listen to it. Clearly, there is a limit to this, but for the vast majority of us, we listen far too much to our brains, we are led around by them rather than by our will, and as a result, we stop short of achieving our potential.