I take notes in an atomic way (other than clipping interesting articles). Because they are atomic, many of the notes are linked in one manner or the other (either via "concepts", "daily log" etc.). So whenever I revisit one of the "concepts" node, I visit these atomic notes.

Also, obsidian has a "open a random note" button. Thus I open a random note once in a while to see if I can learn (or relearn) something + to see if that note is still relevant for me.