Jnana yoga is liberation by seeing, not by doing. Its method is discriminative inquiry: turn attention toward the apparent self and investigate what it actually refers to. Adi Shankara systematized the path; Ramana Maharshi condensed it into a single question: who am I?
The practice is austere. It does not offer devotional comfort or the satisfactions of disciplined action. It asks only for relentless honesty about what is being taken as real. Neti-neti — “not this, not this” — is its refrain.
See Self-Inquiry for its most accessible contemporary form.