Catastrophe here does not mean disaster. Rather it means the poignant enormity of our life experience. It includes crises and disaster but also all the little things that go wrong and that add up. The phrase reminds us that life is always in flux, that everything we think is permanent is actually only temporary and constantly changing. This includes our ideas, our opinions, our relationships, our jobs, our possessions, our creations, our bodies, everything.
Full Catastrophe Living, Jon Kabbat-Zinn PhD, pg 6