For everyone here recommending "How to win friends and influence people" (HWIP), I'd like to offer a counter point and recommend "The Art of Loving", by Erich F

For everyone here recommending "How to win friends and influence people" (HWIP), I'd like to offer a counter point and recommend "The Art of Loving", by Erich Fromm. The basic idea is that love and affection are not just feelings, but actual skills that need to be learned and cultivated. It also introduces the distinction between being lovable and being loving. HWIP largely teaches how to make yourself lovable, whereas the Art of Loving teaches the theory behind actively loving and embracing other people. I think it's a vital skill to have in any area of life, including business.