A phrase often used to appeal to the sensibilities of superpower heroes within.
The phrase 'Harness the Power' would probably conjure up the vision of a superhero or a powerful mechanism to most but when you look deeper the power is the drive from within. The soul if you wish. Whether it be a person or an object of some kind to 'harness' it is to make the most of what is achievable. Let's take the superhero example. Superman used his powers to do good and to help others to the best of his ability, harnessing his powers for the greater good. In contrast Porsche (for example) harnessed the power of their engines to go the fastest. As long as the vision is backed by the drive to do/be the best then the statement 'harness the power' is applicable. This can be associated with anything life throws at you.
Shelley