Michelle Ogundehin, former editor-in-chief of Elle Decoration magazine, is the head judge on the BBC’s Interior Design Masters and co-host of Grand Designs: House of the Year. She trained as an architect and also works as a commentator and consultant, as well as being a trustee of the Design Museum. The Guardian’s journalism is independent. We will earn a commission if you buy something through an affiliate link. Learn more. Her bestselling first book, Happy Inside, explores how home shapes health and happiness; her forthcoming book (spring 2027), Your Powerful Home: 4 Steps to a Home that Heals, looks at your home as a partner in your wellbeing, an ethos she shares through her Happy Insiders Club, which offers guided monthly coaching. What’s the last treat you bought for yourself? A small bundle of artist-grade watercolour paper. Not exciting on the surface, but it gives me disproportionate pleasure. I’ve learned that treats don’t need to be indulgent – they need to remove friction from something you love doing. Great linen sheets fall into this category, too. …