If we think about it logically, where would we get the most return on investment? Sharpening a skill or ability that you are already strong in can take you to another level where you would be untouchable. Whereas spending time trying to develop in an area where you are weak may take you to average or not even that high depending on what your starting point is.
We need to face it that there are things that each of us are simply not cut out to do and there is no shame in that. Investing time and energy trying to develop something, because society or the system says you need to be good it, can turn out to give very disappointing returns. What if you had to spend all that effort getting even better at something in which you are a natural or have developed over your life to a high standard already….can you imagine the possibilities when you become best in class at something? That can only be achieved through strict focus and it would make sense to apply that focus on your talents.