Elder Brother's Maze. The Arizona Series, #1

The ancient desert O'odham people's creation stories parallel the path a young Guy Thornton takes to emerge from the "maze" he has made of his life. The novel opens in the center of the narrative as Guy, a down-on-his-luck Arabian horse trainer fresh out of prison, is getting drunk at the Wander On Inn. He spends the next several months living in the central Arizona desert with an elderly O'odham woman who seeks to teach him "tribe spirit, " while alternating chapters recount the past and his big break when the wealthy Frank Fielding hires him to tend to his champion Arabian mare.
Unfortunately, Guy becomes entangled with Fielding's wife, Lily, and her teenaged, mentally unstable sister, Rose, derailing his dreams of success and belonging through deceit and callous betrayal.