In 2008 I was sleeping in a jungle resort in Thailand and I woke up with the unmistakable symbol from the dream, of the negative and positive space circulating and intertwining in a triadic circular pattern. My best scribblings lead to the vector symbol below labeled Dream Symbol. Today the symbol of Hecate (Greek Goddess) was brought to my attention, and it appeared strikingly familiar, like the symbol from the dream. The actual Hecate symbol has a star in the center, though my focus has remained on the outer rim.
The above Workflow is a 15 minute session in Adobe Illustrator condensed into about 1 minute, showing the construction of the basic Hecate symbol.