India, July 23 -- Anti-ageing millionaire Bryan Johnson has announced that he is considering shutting down or selling Blueprint, his anti-ageing project, because it is literally a "pain in the a ** company."

The 47-year-old entrepreneur from California made his fortune selling his payments platform, Braintree (which had acquired Venmo), to PayPal for $800 million. He has since spent his fortune slowing, and even reversing, the ageing process.

"I don't need the money, and it's a pain-in-the-ass company," Johnson told Wired. He said he's "so close" to shutting down or selling Blueprint. Originally inspired by his search for a clean protein powder, Blueprint became a platform for his strict routines and biological tracking.

"I've been tal...