Michael Alan ‘Mickey’ Singer, an American author and former software developer, is renowned for his spirituality and meditation-focused books, including the New York Times bestsellers “The Untethered Soul” (2007) and “The Surrender Experiment” (2015). He founded the Temple of the Universe, a yoga and meditation center, in Florida in 1975. Additionally, Singer co-founded Medical Manager, now Greenway Health, a company that developed medical billing software, which was acquired by WebMD in 2002 for about $5 billion.