Great Leaders vs Managers

Great leaders aren't always the most likable people. In the long run, great leaders recognize that their job is to get people to do things they might not want to do, in order to achieve goals they want to achieve.  Contrast that with "mere managers," who either want to be liked or try to convince themselves that they don't care. Great leaders know that cordiality is necessary, but also that they might sometimes have to sacrifice short-term likability in favor of long-term respect. 

Bill Murphy Jr. writing in the Understandably newsletter