Donate to, invest, and/or be a part of a company or research group that seeks to cure aging. Maybe something like Google's Calico, but watch out for the quack businesses. It's not that far-fetched, we've tripled the lifespan of worms and even significantly extended the maximum lifespan of monkeys. Some species such as jellyfish don't age.
It's a win-win-win. You get a purpose and goal in life, a great benefit for humanity, and can run PRs again if you succeed.
But don't forget to sign up for cryonics if that doesn't work out.