This isn't my whole approach or anything (it builds on a really good education) but I find my continuous, lifelong learning of things I want in my soul to know about has reached a stable, always-improving habit by having a few stacks of the right books in reach in the right places.

On my toilet is a stack of dual-language books; German and Old English, Latin, French and Spanish, Ancient Greek, Japanese, as well as Shapiro's Introduction to Number Theory. Lots of Dover editions. Wittgenstein.

Next to my desk (on the second desk) there's always an open math book or two (Knuth Vol. 1 and From Frege to Gödel right now), as well as a few open notebooks.

By my bedside, a few works of great literature and philosophy (right now Rawls, Joyce, Homer).

In reach of the couch a variety of books on art history.

By the reading chair, well... lots of books.

I read, skip about, get stuck, forget things, but every day I dip into these little piles for a few minutes here, maybe an hour there if I'm lucky.

One thing I never care about anymore is finishing. My mind can grow a bit more, most of the time.