Spirituality Isn't a Straight Line is not a roadmap—it's a reckoning. In this narrative companion, Mark invites readers into the mess and mystery of a spiritual life that resists tidy conclusions. Through memoir, reflection, and quiet provocation, he honors the crooked paths, unexpected detours, and sacred stumbles that shape a journey rooted in presence rather than certainty. Drawing from his own ruptures and restorations—from walking away from spiritual control to companioning the dying—Mark offers readers a sanctuary for grief, wonder, and fiercely honest faith. This is a book for those who have been told their way was wrong, but kept walking anyway. For those who ache for a spirituality that feels lived-in, not labeled. For those who trust that grace isn't linear—it loops, meanders, and waits.