Well, I must be the pessimist one, but I believe that one shouldn't be afraid of depression or anxiety vanishing because it will not. It's a different from removing a tumor, I would dare to say that if mood disorders were tumors, even after removal, it would grow back. There is no cure for it. But there is maintenance and control of it. That's surreal, but if you are aware that they never found the causes (due to the complexity of our brains), it means that the treatments are based on trial and error, and it will never cure a patient for good. Unfortunately, we have a long way ahead of us when it comes to mental health and efficient methods to treat it.