The Marcus Buckingham HBR article is based on the concept of finding and activating strengths in team members/employees, etc. The Buckingham article shares several stories of how leaders and managers have accomplished this. In particular, Buckingham refers to circumstances where a person, who previously had struggled in a setting, was more successful when they were asked to 'focus on just one key thing' and use that strength to their best advantage. In sports, we see this often on championship teams; a person who has struggled in a previous environment changes their team or employer and with new leadership and a better defined role, sees tremendous success