A lot of circumstances that would test our patience, self control and temperament. If we allow them to dominate us we are just making our life miserable. I remember our Pastor saying if we are very angry to that person, let love be higher than our feelings in order not to be carried away with our emotions. Sometimes we can’t hold our anger and we want to express it to the one causing us but the Bible says command us to be angry but not to sin. Most of the sin we commit is when we are angry right? We should not let the sun set with anger and hatred in our hearts. If you can’t do anything just pray for him/her. Learn to forgive and be forgiven. Nothing better than having an enemy-free life.