One's emotions do not determine reality. Rather, our emotions respond to reality based on what we perceived. Emotions dictate how we perceive things. This explains why people respond to the same text differently. My article at http://clashdaily.com/2014/07/darkness-abortion-seduces-promised-sexual-freedom/ is only one example. I thank the person who identified himself or herself as Prayer Warrior for standing up for me when a very upset Roman Catholic woman made vitriolic false accusations against me. I thank God for his or her grace in dealing with that RC woman who continually attacked me in her anger.
Emotions shape our perception of things, and we then act accordingly to how we perceive things. Emotions can be our friends when they direct us to act the way we should. On the other hand, emotions can also be our enemy when they lead us to sin. Anger is the one particular emotion in the Bible warns against.
He that hath my commandments, and keepeth them, he it is that loveth me: and he that loveth me shall be loved of my Father, and I will love him, and will manifest myself to him" (John 14:21). Jesus is the only standard of goodness because Jesus is God in the flesh, and only God is good (Luke 18:19).