Perhaps one day you break down crying and talk for the first time about Daddy beating you with the broomstick and then buggering you with it. Or maybe you break down one day and talk about being a selfish and cruel little twit because you found it pretty rewarding to be a selfish and cruel little twit. Daddy really did bugger you. Perhaps you see a psychiatrist who dopes you up to the gills and you never cause trouble again and always smile at all the nice people. You have a chemical imbalance that makes your moods swing wildly, regardless of what's going on in your life or your mind.
Life goes on.
You have a chemical imbalance that makes your moods swing wildly, regardless of what's going on in your life or your mind. Sometimes you do terrifically well in school. Sometimes you do nothing at all in school. After you leave school, your earning curve takes off like a roller coaster. Many years later, after many lost jobs and broken relationships, your disorder is diagnosed and a chemical is identified that stabilizes it.