Dune, Frank Herbert
"I have no fear, for fear is the little death that kills me over and over. Without fear, I die but once." "I must not fear. Fear is the mind-killer. Fear is the little-death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone past, I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain."
another person's success is not your failure.
"Be tolerant with others and strict with yourself." - Marcus Aurelius
“No man is free who is not a master of himself.” - Epictetus