Knowledge, like any acquired skill, is only as good as the use to which it's put.
Most of us have, at some time, led ourselves to believe that all we have to do is learn the way to do something, and we'll be able to get, or do, or achieve , whatever that knowledge will show us.
But then, we've discovered that it isn't what you know about something that achieves the objective; it's how you use that knowledge.
Which is one reason why a Black Belt martial artist may get creamed by a an adept street-fighting thug who knows less, but uses his resources with vigour, frequency, and determination.
You can see the same in the business world, where people with alphabets after their names are often employed, or hired on a free-lance basis, by someone who left school at fourteen.
The difference between the two is not the education; it's the application.
That doesn't mean that education is a waste of time, far from it.
All it means is that as you educate yourself in the ways of the world in which you function, sport, business, the arts, whatever, never forget the the real accomplishment is in the DOING.
How you apply those hard-earned qualifications will reflect more in your life than the acquisition of them.
So DO study your craft, learn all you can about it, from whomever, or where ever you can, but never stop asking yourself 'How can I use this in my life?'.
That's when you may find that the knowledge you've gained in your journey is indeed the power you need.