Marie Kondo’s book, The Life-Changing Magic of Tidying Up, is well-known for helping people decide what to let go of in their homes by using joy as a guiding metric. I've found this approach valuable in other areas of my life as well. I’ve adapted one of her techniques to help me when people, situations, activities, or even books and classes start to clutter my mind with frustration. I ask myself, “Does it/they/this bring me joy?” If the answer is yes, I keep it. If the answer is no, but I st...