Where to Next?

This is not a logistical question but rather a solution I am in search of, a desire for a time and thought management system for someone who is now retired. (Wow, you're so young to be a retiree, you should be thinking - ha!) So much of my life has been spent squeezing in personal projects between work and raising a family. While often frustrating, it was a structure that by default gave a priority order to things. 

There are so many things I want to do with my time right now, I mean, that was the primary reason to retire, but where to start? What a champagne problem.