A glass half full attitude
Apparently, depression can be good for you, or so says this BBC article. But this quote is the best bit:
Everybody's life is full of occasional misery and we are going to suffer. All life ends in grief, unless you are lucky and you and your loved ones all die simultaneously in some plane crash.
That's certainly a different definition of "lucky" to one I'm familiar with.
BBC NEWS | Magazine | Is depression good for you?