Read More: Negative Emotions, Christianity, God and Emotions, Bad Emotions, The Inner Life, Accepting Emotions, Religion News
Our emotions aren't fleeting things of no substance. They're a primary means by which God communicates to us. To dismiss a "bad" emotion because it didn't come from God is to dismiss God himself.
If we're a little more skillful at working with our emotions, we might catch our anger, jealousy, or whatever, before we react to it. We can simply take a look at it.