Zen is not a religion, a belief system, nor a philosophy.
Zen is a simple way to discover our True Self through direct, concrete experience and attain true peace of mind. The way to reach this experience is zazen (坐禅), a practice of sitting zen meditation. The practice is simple, but it requires discipline and guidance from an authentic zen teacher.
Sanbo Zen is a lay lineage of Zen practice, based in Kamakura, Japan, which combines its Soto heritage with a program of Rinzai koan study.