All of this information might seem like common sense, and it is. However, negotiations are rarely undertaken by two parties demonstrating common sense. The two primary obstacles to effective negotiations are ego and greed. There is an innate ego-based need to win that must be controlled.The greed component is the result of erroneous thinking. You’ll win the most in the long-term if you’re able to maintain or improve the existing relationship. Forcing your neighbor to trim his tree is hardly a victory if his resulting anger results in four flat tires on your prized 1967 Mustang.Find solutions that meet both of your needs. Leave your ego at the door and consider the importance of your relationships. You’ll be glad you did!