Let me rise to defend the positive gospel, if not the prosperity version. (You can e-mail me with your criticisms later.) I believe the positive gospel, for many, is a crucial foundation of the American dream.
Youcan get it by mail order, but a recent trip to various expat Brit outlets in New York yielded what was tome more like a somewhat velvety cream cheese spread than the soupier, clottier Double Devonshire clotted cream of memory.