Derek I love your mantra!! I may borrow that!! Mine is always a scripture and as I work out, the tougher the workout gets, I just have that scripture playing in my head but I emphasize a different word each time.
Mine is ” I can do all things through Christ who strengthens me” so every time it goes through my head , I emphasize a new word of it. This proves to be very powerful for me as it makes working out fun and solidifies a message deep inside my soul that I already believe! Thanks for starting this topic! Dianne