Stuart Greenblatt was born in Brooklyn and raised in Queens, the two New York boroughs he writes about in his first novel, August Greenleaf's Last 7,000 Days. At the age of fifteen, he moved to Connecticut with his mother, Ella, and older brother, Larry. His father remained in Queens, and not long afterward, he and Ella divorced.

Stuart graduated from West Haven (Connecticut) High School, and after a series of dead-end jobs, he began his thirty-five-year career as a driver for UPS. The concept for this novel came to him early in his career--following a particularly memorable delivery--and he began filling notebooks with ideas for his story.

Shortly before retiring from UPS, Stuart began to suffer from recurring episodes of a debilitating depression, which led to him being hospitalized for several weeks. He credits his daughter, Sarah (a clinical social worker at the time), and the staff at Silver Hill Hospital in New Canaan, Connecticut, for helping him through that difficult period in his life.

In March 2020, Stuart finally sat down to write his novel. Later that year, he teamed up with coauthor David Connell, a dog park buddy, and the two began a collaboration, with Stuart providing the narrative arc and most of the content, and David working to bring Stuart's vision to life.

Stuart now enjoys retirement with his wife, Debbie, their eight-year-old Jack Russell terrier mix, Bowie, and their many friends in the shoreline town of Branford, Connecticut.