"We don't rise to the level of our expectations, we fall to the level of our training." ― Archilochus Mental toughness can take many forms: resilience against attack, calmness in the face of uncertainty, persistence through pain, or focus amidst chaos.
http://fourhourworkweek.com/2016/12/14/mental-toughness/?utm_source=pocket&utm_medium=email&utm_campaign=pockethits
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