Help Please? ?

in your brain there is a place lets call it a cup. that cup is filled with endorphins which make you happy. lets call it chemical A. chemical A is an emergency backup for when you get really sad. The easy answer may be you are going through puberty. it is unlikely though. sometimes people are born were that cup is only half full all the time. also for people who are suicidal, which is because the cup gets too full which results in mood swings. they get pills. you may be just not getting the right amount of food. you can talk to a Doctor, who might prescribe pills, or make you get mental help. seriously though get help you might soon be considering suicide. and if that happens, talk to anyone even me because no one should kill themselves.