Learning has a tremendous flywheel effect.
Ten years ago, I read the 7 Habits of Highly Effective People by Stephen Covey. More recently, I've become a fan of Gallup's work with Strengthsfinder 2.0 and the Good to Great series.
Both bodies of work attempt to explain how to achieve amazing results whether you call it greatness or effectiveness.
And while you could no doubt benefit from each of these resources, why not use both? Why not mix and match to create your own take on greatness? Or effectiveness? Or the superlative of your choice?
The next time you're searching for a great idea, consider that your answer may lie in combining a bunch of unoriginal thoughts to achieve originality.