Wisdom kept entirely private disappears twice.

Wisdom held privately is lost at the end of a life, and it is also lost during that life, since nothing it could have prevented was prevented. That is the double disappearance: it helps nobody while you have it and vanishes when you go. Most of it was assembled at other people’s expense as well as your own.

Find one way to put some of yours where it can be found. A conversation, a written note, a habit of telling people what you actually learned. It does not need an audience to be worth doing.