The author describes their guiding idea of "engineering spirituality" when they began exploring spirituality and pursuing business objectives in the late 1990s. As an engineer, they found spiritual practices to be vague and without clear methods. They aimed to create models through which anyone could access spiritual teachings and practices through precise instructions, making them usable by all like an engineer creates widely accessible products and solutions. The author recounts a dream of entering a dark and difficult forest with no clear path that inspired them to begin developing these models and instructions.