This has gotten more difficult over the years since I first lived alone, but I recommend it if it’s an option.
Otherwise, do everything I didn’t do enough of: travel, date everyone, go out with friends, talk to your relatives, exercise, go to the dentist.
*Do not go into debt to do any of this, however.
And open an IRA account if you’re American and must leave your retirement up to the whims of the stock market.