A friend posted this quote on Facebook recently. I don't know what prompted her to share it just then, but it was exactly what I needed.
This being human is a guest house. Every morning a new arrival. A joy, a depression, a meanness, some momentary awareness comes as an unexpected visitor. Welcome and entertain them all!...The dark thought, the shame, the malice, meet them at the door laughing and invite them in. Be grateful for whoever comes, because each has been sent as a guide from beyond.
-- Rumi, "The Guest House"