Because we are human and we live in a fallen world and we are tainted by a fallen nature, we are not always in control of what emotions we experience on a daily basis. Sometimes circumstances play out and we experience joy, love, laughter and peace.
We can also experience the dark side of emotions where we find fear, worry, anger, guilt, loneliness and embarrassment.
Maybe God wants to use these negative emotions we experience in a positive way. Maybe god has a message for us in these feelings?