Life is a mixture of happy and sad moments

As the Dalai Lama says: "Everyone wants happiness; nobody wants to suffer." If this is true (and I firmly believe it is), why do we feel 'negative' emotions like fear, anger, sadness or hatred? Take fear, for example, which manifests as anxiety in problems such as agoraphobia, panic disorder or social phobia (the fear of interacting with other people, especially strangers or groups). Feeling severe anxiety is no fun at all: your heart races, your mind goes blank or is filled with catastrophic thoughts, you get sweaty, dizzy, breathless and generally freaked out.