Welcome the disagreement.
Remember the slogan, "When two partners always agree, one of them is not necessary". If there is some point you haven't thought about, be thankful if it is brought to your attention. Perhaps, this disagreement is your opportunity to be corrected before you make a serious mistake.
Distrust your first instinctive impression.
Our first natural reaction in a disagreeable situation is to be defensive. Be careful. Keep calm and watch out for your first reaction. It may be you at your worst, not your best.
Control your temper.
Remember, you can measure the size of a person by what makes him or her angry.
Give your opponent a chance to talk. Let them finish. Do not resist, defend or debate. This only raises barriers. Try to build bridges of understanding.
Look for areas of agreement.
When you have heard your opponents out, dwell first on the points and areas on which you agree.
Look for areas where you can admit error and say so. Apologize for your mistakes. It will help disarm your opponents and reduce defensiveness.
Promise to think over your opponent's ideas and study them carefully.
And mean it. Your opponent may be right. It is a lot easier at this stage to agree to think about their points than to move rapidly ahead and find yourself in the position where your opponents can say: "We tried to tell you, but you wouldn't listen".
Thank your opponents sincerely for their interest.
Anyone who takes the time to disagree with you is interested in the same thing you are. Think of them as people who really want to help you and you may turn your opponents into friends.
Postpone action to give both sides time to think through the problem.
Suggest that a new meeting be held later that day or the next day, when all the facts may be brought to bear. In preparation for this meeting, ask yourself some hard questions : Could my opponents be right ? partly right ? is there truth or merit in their position or argument ? Will my reaction drive my opponents further away or draw them closer to me ? Will my reaction drive elevate the estimation good people have of me ? will I win or lose ? What price will I have to pay if I win ? Is this difficult situation an opportunity for me ?
Quoted from "Bits and Pieces published by The Economic Press, Fairfield.