"Can't Hurt Me" by David Goggins is a memoir and self-help book promoting discipline and resilience through challenging oneself daily.
I mean, to borrow from the mighty David Gogggins, who's kind of the I don't know if you're familiar with David, but author of Can't Hurt Me, and he's been on this podcast and a real proponent of
""Huberman references David Goggins and his book "Can't Hurt Me" in the context of discipline and doing hard things."