Marianne WIlliamson is said to practice Chaos Magick
Chaos magic, also spelled chaos magick, is a contemporary magical practice. It was initially developed in England in the 1970s, drawing heavily from the philosophy of artist and occultist Austin Osman Spare.[1] Sometimes referred to as "success magic" or "results-based magic", chaos magic claims to emphasize the attainment of specific results over the symbolic, ritualistic, theological or otherwise ornamental aspects of other occult traditions.[2]
Chaos magic has been described as a union of traditional occult techniques and applied postmodernism[3] – particularly a postmodernist skepticism concerning the existence or knowability of objective truth.[4] Chaos magicians subsequently treat belief as a tool, often creating their own idiosyncratic magical systems and frequently borrowing from other magical traditions, religious movements, popular culture and various strands of philosophy.[3]
Early leading figures include Peter J. Carroll and Ray Sherwin.[2]
https://en.wikipedia.org/wiki/Chaos_magic