I am 26 and my life is becoming very unpredictable these days; sometimes, I am normal, I feel good and I do my work properly, but sometimes, I am too restless about everything, this is followed with fast heart beat and it drains away my energy. small small things make me angry and terrible I react at people. Sometimes I feel my life has slowed down and is leading nowhere. Can this be a serious disease? Especially these days, I am coming to hear so much of mood swings and bipolar, I really do not want to be mentally sick. I have had a depressive phase a few months back due to my failed relationship, but I have recovered myself.