The Norwegian “business philosopher” offers five takeaways to unleash the Viking within and be productive, even in the darkest of winters. I still remember those freezing winters growing up in Røros: a small World Heritage-listed mining town nestled near the Swedish border in the middle of Norway. At age three, I experienced a chilling -65°F, and even today during the cold season, it gets below -30°F with only a few hours of daily light.