Sing a happy song! Let the tune, its words, meaning, and inspiration flow into the world. From your car, your shower, walking, sitting at home, while preparing a meal or getting dressed, chant mantra, sing a diddy, make it up as you go, but good vibes no matter its form.
Another aspect of equanimity is that it is free flowing to all, includes all, has no preferences or bias. There are limitless ways to habituate ourselves to benefiting others (which will benefit ourselves), and singing a happy tune, a mantra, or Mr. Rodger’s “Neighbor” song, put good vibes into the world and, while doing so, your mind is occupied with goodness or the blessing of others rather than the usual BS that rolls in our mind.
Sing. Chant. Make it up. Make it happen!