One big mistake leaders make in their development is to try to overcome weaknesses rather than further building on their strengths.

I see it all the time when my clients undergo a 360 degree feedback: the majority of executives pay more attention to what others rate as a weakness rather than what is seen as their strengths.

And whilst of course you need to work on those weaknesses that could one day become your career stopper, research indicates that a great leaders are not well-rounded. They are not generalists. Great leaders excel at a few key skills and utilize those highly effectively.