Sometime we reach moments in life where we don't have anything left. The Finnish term Sisu refers to those times when it seems like you can't do anything more, but you push through anyway. Like a force of will or fire inside, Sisu is a unique concept that may give you faith and confidence in the idea that no matter how hard things might be, you have the power to overcome within you. Enjoy!

Links:

Embodied fortitude: An introduction to the Finnish construct of sisu | International Journal of Wellbeing

A measure for assessment of beneficial and harmful fortitude: development  ...