Why Might Small, Comfortable Changes Work Better than Radical Steps?

I just read a short, interesting book by Robert Maurer, One Small Step Can Change Your Life: The Kaizen Way.

I'm surprised I hadn't known about kaizen before. The Japanese term kaizen is an approach of using small steps of continuous improvement to bring about change. Instead of pursuing radical changes – which are ambitious, difficult, and often don't succeed – you take small, comfortable steps. Maurer points out that although kaizen developed in a business setting, it also applies to...