Sisu - The power of Perseverance. Perseverance means to keep going and keep fighting in spite of our obstacles and challenges. No matter how many times we are knocked down, and even when others cannot see our pain or suffering, we press on. The road ahead seems fraught with endless pitfalls and insurmountable challenges, yet the journey behind us has been barely passable...Hope seems downright foolish at times! But our Sisu within calls us to persevere and forge ahead no matter what the road conditions are.