I can feel the 60S looming. In my profession I've just moved along with my age. By thinking in decades rather than whether someone's 42 or 47 you can give yourself a whole 10 years to turn yourself around in.
It's rather splendid to think of all those great men and women who appear to have presented symptoms that allow us to describe them as bipolar. Whether it's Hemingway Van Gogh... Robert Schumann has been mentioned... Virginia Woolf Sylvia Plath... some of them with rather grim ends.