Dan Cable, professor of organisational behaviour at London Business School, writes in Harvard Business Review : "For leaders, the upshot is that the potential is already flowing right under the surface. And it doesn’t take charm, or motivational speeches to tap into that energy — all it takes is a concerted effort to infuse self-expression, experimentation, and personalised purpose into all that we do."
In this article , he talks about how to best help demotivated workers.