I want to recommend this book by Chris Voss–NEVER SPLIT THE DIFFERENCE: NEGOTIATING AS IF YOUR LIFE DEPENDED ON IT. It’s an excellent book to learn not only how to negotiate but also how to communicate in all areas of your life. It will help you improve your communication in relationships, at work, when making purchases and when negotiating. Take a minute and look this book up on your favorite book site for more information. I bought the audio version and am on my 3rd time listening. I’ve gained so much knowledge and was able to being using the information day one. It’s helped me at work in talking with upset customers and it’s helped me communicate better with my husband. I highly recommend the book or audio to anyone who wants to improve their ability to communicate especially during a conflict situation or disagreement.