Emotionally Unstable

Do everybody has to experience this way? I've been unhappy for the previous days and have difficulty of coping it up. Ive been so vulnerable for small things, I easily get upset and easily get irritated. Lately,I had succesive bad dreams and afraid about it because its about my death.I cant forget about... I want to tell all about it to someone who would show sympathy regarding my fear... my feelings... One problem for me if Im unhappy I tend to remember sad memories and the more that im becoming unhappy and depressed. HELP!!!