It is not just a person's physical constitution, their intellegence, their education, or even their social conditioning that enables them to withstand hardship. Much more significant is their inner development. And while some may be able to survive through sheer willpower, the ones who suffer the least are those who have a high degree of patience and courage in the face of adversity.
Dalai LamaOn love, not harming others, and respecting all beings. Even animals have these elements in their behavioral patterns. We should start by observing how animals act. They are honest and appreciate it when we are honest with them. If you present something nice to an animal in one hand while hiding a rope in the other, the creature will know your intention. Yet animals have no religion, no constitution. Basic nature has endowed them with the faculty of discernment. It is the same for humans.
Dalai LamaIt is... very helpful to think of adversity not so much as a threat to our peace of mind but rather as the very means by which patience is attained.
Dalai Lama