Standard stuff.
Eat right. Sleep right. Exercise, (I hate it, but my body apparently needs it). Maintain body temperature, (not too hot, not too cold). Immerse myself in warm water as frequently as I can manage. Find forums for creating and participating in "growth" discussions, experiments, learning, and developing. Keep myself suitably challenged, suitably entertained, and suitably relaxed.
I've been spending more time on monitoring and maintaining my health recently, which is, overall, good for me, but wow it takes a lot of time and energy.
Oh, and, um... things the board rules prevent me from discussing. Those are some big ones.