Sustainability writing often arrives with a raised voice. The Gentle Green Life announces the opposite in its very first word, and that choice of register is the clearest signal we have about how Roseann White approaches the subject.
It is filed under home and garden alongside personal development, a fair description of the territory: changes made at the scale of a kitchen, a windowsill or a weekly routine, framed as something you grow into rather than something you are scolded towards.
At barely over an hour, this is closer to a friendly briefing than a manual, and the brevity is part of the argument. Small is rather the point.