I came across this quote by Jon Kabat-Zinn. I respect his work on mindfulness and liked this take on stillness:

“Non-doing has nothing to do with being indolent or passive. Quite the contrary, it takes great courage and energy to cultivate non-doing, both in stillness and in activity. Nor is it easy to make a special time for non-doing and to keep at it in the face of everything in our lives which needs to be done.”