Marie Kondō writes practical lifestyle non-fiction about decluttering, organisation and deciding which possessions deserve space in the home. The Life-Changing Magic of Tidying presents the KonMari method, which recommends sorting by category rather than room and keeping items that 'spark joy'. Spark Joy develops the same approach with more detailed guidance on clothing, books, papers, sentimental objects and storage. Kondō's books are concise, calm and instruction-led, combining step-by-step advice with a broader idea that reducing possessions can clarify priorities. Her work fits home organisation, decluttering and lifestyle self-help rather than interior design, with the focus placed on decision-making and relationship to possessions more than decorative style. Read more Less