From the Jack’s Winning Words blog come the inspiration for today’s post –
“I have perceived that man with courage and will-power can overcome anything.” (Scharnhorst)
Jack went on to write – Determination? Persistence? Tenacity? Guts? The Finns have a word for it: SISU! Sisu is even in the Bible. “I can do all things…through Christ who strengthens me.” Paul wrote this while facing difficult situations in his life.
I often advise my real estate clients that selling their house will take patience and 
persistence. They must get into the habit of keeping the house in a condition such that a showing could take place at any time. That means allotting some extra time in the mornings to make sure it is show ready before heading off to work. It helps if you can exercise that patience with a good attitude.
In life in general, those with SISU as part of their personal makeup most often succeed. They have the courage to try new things and the will-power to stick with it until they succeed. They have SISU.
Sometimes we need the extra little boost to our SISU in our daily lives that a little reflection in prayer can add. Perhaps you could find strength and resolve by just repeating that little phrase that Jack mentioned in his post – “I can do all things…through Christ who strengthens me.” For some the opening lines of the 23rd Psalm is a pick-me-up – “The Lord is my shepherd; I shall not want.” For others the fear of the unknown or of failure is stripped away be this passage, “If God is for us, who can be against us?”
The common theme that runs through all of the supportive scriptures that I might mention is that you are not in this alone, if you accept and believe in Jesus Christ. He is always with you and with Him in your corner you cannot fail. You may suffer setbacks from time to time, but your willpower, courage and tenacity (your SISU), strengthened with God’s help, will pull you through.
Video game players know that in many video games there are secret treasures to be found that have restorative powers. The character that you are playing may be beat up, injured or otherwise in bad shape due to setbacks in the game; however, if you find those hidden 
treasures they can restore the character to full strength immediately, ready to go with the game. Life is a little like that; although the restorative treasures aren’t really hidden; they are most often just forgotten about. Those restorative treasures are the words of God as found in the Bible. A few have been mentioned here, but there are too many to list.
Here’s a link to one site that points you to several uplifting passages that might help make you day better. Find a few for yourself and see if they don’t restore your SISU.
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