Negotiate This!," your goal is to find a mutually-acceptable solution to a problem. You begin the process by not knowing the other person's concerns. Be skeptical about the things that you think you know.
Find a way to offer concessions that don't mean a lot to you, Cohen explains.
It's not warfare. You goal isn't to get the other guy to surrender. It's to converge on a mutually-acceptable solution.
Cohen emphasizes that how you interact is very important. Be rigid about your goals and interests. But be as flexible as possible about how you achieve these goals.