Tons and tons and tons of books are out there about communication, and I find Marshall Rosenberg's Nonviolent Communication (2015, third edition) the most useful.
Nonviolent communication presumes that conflict between individuals exists because of a miscommunication of their needs. That miscommunication mistakenly uses forceful or manipulative language that brings up fear, shame and guilt.
Understanding nonviolent communication, what upsets me is that sometimes leaders, either consciously or subconsciously, use overt or veiled violent communication for their agendas. I truly wonder what hope our world has for improved communication, and more understanding and harmony, when our leaders often communicate so violently.
The great news about being well-versed in nonviolent communication is that it makes every conversation much easier. We can go ahead and forget about "winning" conversations or merely communicating for factual information. Instead, we can go deeper in our relationships, understand each other better and show our children how to communicate effectively and with meaning.
Just like we've come a long way with putting babies in incubators away from parents when they're born, we have come a long way with communication for those interested in improving theirs. We may live in a world of Tweets, social-media posts and one-sided communication without depth, but Nonviolent Communication is an excellent book for not only improved communication but an improved life.