Emotions can be viewed as a language of the body. It is the original language that we all used as infants to communicate with the world. The sounds and movements of joy, fear, anger, sadness, pleasure or frustration were signals by which we expressed how well our needs were being met. From that point of view then, no emotions are negative – they are only expressions of needs or fulfillment of needs.
As we developed more verbal skills, that primal language received more and more disapproval to the point where it is considered “immature” for adults to express any emotions directly, positive or negative. And yet as we look at the 5 Elements chart in TFH, we can see immediately that all of the basic emotions are necessary for life.