A teacher is not strictly necessary at the outset, and many practitioners begin by simply sitting, learning the basic posture, breathing, and attitude from trustworthy books or recorded instructions. One can establish a regular practice in this way, following simple periods of seated meditation and allowing familiarity with stillness to grow. For this initial phase, self-guided practice can be entirely legitimate and beneficial, especially when grounded in the instructions of recognized Zen traditions. In that sense, nothing prevents one from beginning immediately, with sincerity and consistency.

Over time, however, the role of a teacher becomes increasingly significant if the aspiration is to enter more fully into Zen as a living tradition. A qualified teacher can offer subtle corrections in posture and breathing that greatly affect stability, comfort, and endurance in sitting. Such guidance also extends to method: whether to emphasize simple awareness of breathing, “just sitting,” or other traditional approaches, and how to apply them in a way that suits one’s particular disposition. This kind of discernment is difficult to cultivate alone.

A teacher also serves as a guide through the psychological and spiritual terrain that often arises in sustained practice. Restlessness, doubt, fear, and unusual or intense experiences are not uncommon, and without context they can easily lead to confusion or discouragement. Moreover, the practice itself can become entangled with subtle forms of self-image, spiritual pride, or avoidance; a teacher’s perspective helps expose these patterns. In this way, instruction is not merely technical but also ethical and existential.

Within traditional Zen, the relationship between teacher and student is regarded as central to authentic training. Zen places great emphasis on direct, person-to-person transmission and on guidance that unfolds within a shared lineage and community. While solitary meditation can be deeply helpful, it does not by itself constitute full participation in this classical structure of training and recognition. For those who feel drawn to that deeper dimension, it is therefore strongly recommended to seek out a qualified teacher or community when circumstances allow, even if practice has begun alone.