What am I?

I grew from a thought and yet remain unbound I’m a bomb to man from the day he was born, never was his friend so, I rob him of his youth health and hope. Yet, he says I heal all wounds and all wounds are decaying. I torment him, take away his family then fade them away. Feeling generous, by leaving him memories of what was. I govern him by controlling his every decision, regrets and losses. I corrode, decay and yet I don’t exist, existing in the minds of man. Man trade me for currency and never promising freedom, only a trip to the grave. He always gamble with his life as I loop him in karmic cycles, blindfolding him and throwing him in a maze, a maze, he just completed now of which he doesn’t know and yet I don’t exist, existing in the minds of man.