Everybody has somebody or something that disagrees with them at one time or another. The best way to react to contrary, negative, unsettling, or disappointing news is to smile and be gracious. The last thing you want to do is display your displeasure as that marks you as a disagreeable person. The person who handles disappointments cheerfully, calmly, and rationally creates a favorable impression in others and establishes a good reputation for himself.
We've all heard the saying, "You can't please everybody." So, if you try to find out what people think of you, your ideas, or your opinions, you may end up sorely disappointed. You have to have your convictions, stick to them, and try to ignore the negative remarks that you hear. If you know you are right in something it doesn't matter what everybody else's opinion is. However, you don't want to strut around, be arrogant, or cocky. A quiet self-assurance and a calm, serene face are the best defenses you can have.
If you were hoping for something to turn out differently than you had hoped, it's best to swallow your disappointment and be a good sport. Be in control of your emotions. Put on a "game face" if you have to. Everything doesn't always go our way and we have to learn to take what comes and do it with good grace.
It's not easy swallowing disappointment or feeling you're all alone in something. But the most successful people are the ones who gallantly take their bumps, scrapes, disappointments, and others' misjudgments and carry on.