In the Buddha’s first teaching—called the four noble truths—he talked about suffering. The first noble truth says that it’s part of being human to feel discomfort. Nothing in its essence is one way or the other. All around us the wind, the fire, the earth, and the water, are always taking on different qualities; they’re like magicians. We also change like the weather. We ebb and flow like the tides, we wax and wane like the moon. We fail to see that like the weather, we are fluid, not solid. And so we suffer.
From Comfortable with Uncertainty: 108 Teachings on Cultivating Fearlessness and Compassion by Pema Chödrön, page 25