Tapas — the Sanskrit word usually translated as "discipline" or "austerity" — literally means heat. The yogic tradition understood discipline not as the suppression of desire but as its transformation: the directed application of will producing a kind of internal combustion that burns through obstruction. Theodore Bryant, a licensed psychotherapist, reaches the same observation from the other direction. His 153-page guide to building self-discipline as a learnable skill is a Western psychological handbook — and a useful companion for any practitioner working to understand why yoga is easy to begin and difficult to sustain. Bryant's approach is structured in ten daily chapters, each focusing on a specific obstacle to self-discipline and a concrete strategy for addressing it. The book is…