I never beat depression. No one ever has. It's not possible. It will never be solved. Depression, anxiety, misery exists as something that you will continually try to get rid of. You go through ups and downs continually, never getting quite free. It has never been beat by anyone. No one has ever figured out the mythical "answer". 

You're not supposed to conquer depression. When you realize it is incurable and there isn't any hope in the world for you, you eventually forget about it. Whether or not you're depressed becomes irrelevant. Then you are free.