Get out of the comfort zone to grow.
Get into the Zone of Proximal Development (John calls it the Challenge Zone).
Does Iron really sharpen Iron?
Learned Helplessness
Fight Nerds
Also mentioned:
Mark Vignali
Tyler King
Cage Titans
Michael Polvere
Jesse McElligott
Rory Connors
John Burke
Leo Akiki
Zoran Amar
Lev Vygotsky
Marcelo De Oliveira
Reggie Davis
Ebrahim Aziz
Jon Ciampa
Matt Tullos
David Branch