But of course: https://en.wikipedia.org/wiki/How_to_Win_Friends_and_Influence_People https://en.wikipedia.org/wiki/How_to_Win_Friends_and_Influen... If there's

But of course: https://en.wikipedia.org/wiki/How_to_Win_Friends_and_Influence_People https://en.wikipedia.org/wiki/How_to_Win_Friends_and_Influen... If there's a single book I wish everyone had read - not just managers - it would be this. I'd market it as "manual for human beings". You learn how to deal with them, as well as how to be one.