Quality of character doesn't make a leader, but the lack of it flaws the entire process.
Peter DruckerUse feedback analysis to identify your strengths. Then go to work on improving your strengths. Identify and eliminate bad habits that hinder the full development of your strengths. Figure out what you should do and do it. Finally, decide what you should not do.
Peter DruckerThe great mystery isn't that people do things badly but that they occasionally do a few things well. The only thing that is universal is incompetence. Strength is always specific! Nobody ever commented, for example, that the great violinist Jascha Heifetz probably couldn't play the trumpet very well.
Peter Drucker