Give and Take: by Adam Grant.
Adam Grant defines three different styles of leaders: 1) givers, 2) takers, and 3) matchers. Matchers try to create a balance between giving and taking. Most of my life, I thought I would be successful as a “matcher.” Grant convinced me that giving is the most successful reciprocity relationship. Grant argues that reciprocity cannot be governed by self-interest and that the best leaders are givers. Givers focus on what others need from them and are generous, sharing energy, time, knowledge, and ideas with all.