so, i've been having mood swings for as far back as i can remember.. they have been getting kinda hard to handle over the past year.. i can be happy one minute then the littlest thing will set me off and i will be come so angry i could kill someone.. other times i just want to sit alone in my room and cry and i feel so overwhelmed with the mood im going through i don't know what to do.. I feel miserable and i just want it to all stop or at least get some kind of insight to why its happening and what i can do to make it better.. help..