It is amazing how many people believe or teach that we can as reasoning people pick and choose our emotions that we want to keep. It would be nice to eliminate anger, jealousy, hate, pettiness, and all the other negative emotions and desires.
If only we could be happy, joyful, caring, and content all the time we would not be so frustrated and angry with life most of the time. Some would say an admirable goal in life to control our emotions.
Life is not about controlling our emotions but learning to recognize and live with our emotions without giving into them. We could talk about how love conquers all but then we need to recognize that can bring hate, jealousy, violence, and so on.
I don't know about you but I have found that I can't control what emotions arise at all. All I can do is decide how I will live that emotion when it is present. Do I give into it and take actions based on it or do I let it flow through me knowing that it will pass.
We have the choice of how we handle our emotions but not when or how they happen. We can't eliminate them without dehumanizing ourselves so we need to learn how to live with them. An interesting challenge.