When I’m lifting weights, learning something new, or stretching my capabilities with work I’ve shifted my thinking from saying “Ouch” or at times “I can’t” to telling myself “Growth”. It’s my mantra. Growth in muscles happens in the last few reps (ask Dorian Yates and Mike Mentzer) and it happens in the moments you feel like you’re unable to accomplish something. Seek it, but expect the discomfort. Embrace the discomfort. And like a mantra, the discomfort should be repeated.