His own Pandora's Box

The old man then decides. He does not want to vanish, to become nothing and then being unable to feel anything. He is resolute, and terrified, but he wants to feel happiness again, when he was a small kid, a hopeful teenager, a young adult full of energy. He accepts the price, and with a shaky hand he opens the box. Soon, his inner demons will be haunting him again, but that is the only way.