A few of my favorite qoutes:

“We all knew there was just one way to improve our odds for survival: train, train, train. Sometimes, if your training is properly intense it will kill you. More often — much, much more often — it will save your life.” 
“If you train people properly, they won’t be able to tell a drill from the real thing. If anything, the real thing will be easier.”

“Surmounting difficulty is the crucible that forms character.”

“An amateur continues until he gets it right, a professional continues until he cannot get it wrong!”

“Inside every man is a child that wants to play.” -Friedrich Nietzsche

“A day without training is a day without meaning!”

“There is one way of life for ordinary people, another for the warrior!” -Miyamoto Musashi

“Sweat saves blood, blood saves lives, and brains save both” -Erwin Rommel

“We will find a way.. or make one” -Hannibal

“A diamond is created under pressure”

If you have a saying, qoute or idiom you use to make yourself stronger, tougher, smarter or what-ever, please share it with me here!

Some Videos I like: