try different things. get a movie pass and see all the current movies, go to as many museums
as you can, library borrow and read thrillers, take a long drive somewhere, eat foods you
have never had before (Chinese, Japanese, Mexican, Thai, Peruvian, Spanish, Russian, etc)
gather all your old but respectable clothes and donate to the fellows who need them to get a job,
volunteer at abused single parent shelter.
on a personal journey level, learn to play an instrument, or learn to program, take pictures,
etc
I have a lot of retired/older acquaintances, half are waiting to die, and the others see
freedom: one at 60+ bought the baddest Corvette he could find, another bought a Porsche
and one started to learn to program C++.
take vitamins, supplements (nothing from China), dye your hair, get ear rings, etc
then get a passport and go to a country you never been before, don't speak the language,
and never have eaten the food - try Estonia, Macau, southern tip of latin America.
then write a book, learn to dance and tango on the ferry ride from Buenos Aires to
Montevideo.
then after all that go back to classical music (600+ years vs 70 years of rock)
and develop a real bucket list.