Arijeet Tripathi's Key Ideas from Can't Hurt Me
by David Goggins

Googins childhood was more brutal than most of the people, From mentally and physically abused and living in poverty, Faces bullying and Racism. Despite having so many difficulties and without having any physical and mental health, He is the only member of the U.S. armed forces ever to complete training as a Navy SEAL, Army Ranger, and Air Force Tactical Air Controller. He is also a former Guinness World Record holder for completing 4,030 pull-ups in 17 hours, and one of the top endurance athletes.

Most of us give up when we've only given around "40 %" of our maximum effort. Even when we feel like we have reached our absolute limit, we still have 60% more to give!

Once you know that to be true, it's simply a matter of stretching your pain tolerance, letting go of your identity, and all your self-limiting stories.