Sisu

[Tanya Shivari]

a uniquely Finnish quality;
the word used to typify the Finnish spirit;
a concept that is at the heart of how all Finns view themselves;
a certain feature or value considered by Finns to be typically Finnish

endurance, resilience, tenacity, determination, perseverance

an inner reserve of diligence, capacity, the ability to face head-on and always overcome

craziness: the recklessness that inspires a person to take on something in the face of incredible odds

bravery, empowerment, inner strength

[Rihanna]

Finnish principle of high power of will which should make you to achieve anything. Characteristics: Determination, courage, persistence (etc.)

[Sarah]

A typically Finnish term, meaning strengh, perseverance and resilience. Could be taken as similar in meaning to the English saying, Just do it.
Sisu is not often used in other countries, but is very important to the Finns, as they feel that it is part of what makes them, them.