I stick to what I do best, and I think what makes an artist an artist is when they know who they are.
I am doomed or fortunate to stick to what I do best.
Core competence, as it is used by many managers, is a dangerously inward-looking notion. Competitiveness is far more about doing what customers value than doing what you think you're good at.
If you can't play the blues... you might as well hang it up.
An important re-engineering principle is that companies should focus on their core competence and outsource everything else.
It is rarely a mysterious technique that drives us to the top, but rather a profound mastery of what may well be a basic skill set.
Knowing one thing well empowers you and gives you a set of tricks to the trade that you can apply across the board. Go deep, and it will serve you when you make your choices about where you want to leave your mark.