Listen to the person who disagrees with you most today: their contradictions will be more helpful to you than you think. Having people agree with you and support you is great and all, but when all you have around you are 'yes' men, you don't get challenged. And when you don't get challenged, you don't know how to defend your opinions. You can't be afraid of conflict in life, because acting out of any kind of fear is not a good way to live your life.