Ia mastery and skill needed to maintain human relations?

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Now a days people are more concentrating on personal stature and not give much attention to human relations. cerain skill and mastery of basic standards are seem to be necessary for maintaining good human relations. Success in any line of work or area of expertise depends mostly upon the knack of the person in dealing effectively with others. People who succeed in life are the ones who understand the human natue effectively. What do you say?