Everything you need to understand or teach The Life-Changing Magic of Tidying Up by Marie Kondo.
Marie Kondo is a tidying up expert and consultant. She has developed a process she called KonMari which is an entire system of de-cluttering a household. She walks her clients through the purging system in which they decide to keep or discard items. She urges them to get in touch with each item. If the person feels joy, the items should be kept. If there is no reaction, it is time for the item to move on. After the purging process, Marie takes her clients through the storage process. Once a house is tidied up, the person is free to explore other areas of her life that need transforming.