The Poetry Foundation has an interview with the American poet and memoirist Mary Karr, in which she discusses how the mind can be its own worst enemy:

If you’re suicidal, your mind is actually the keenest threat to your survival. Yet depressed people still listen intensely to their minds even though said minds NEVER have anything good to say. Think of it, you try to employ the diseased organ to cure itself! If someone outside your body were shouting those awful things you say to yourself  in such times, you’d plug your ears and sing lalalala. You have to stop that mind or die.

A simple meditation practice I started twenty-three years

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