The Bhagavad Gita · chapter 14 of 18 · 27 verses · हिंदी में पढ़ें
14. The Yoga of the Three Gunas
Guṇatraya Vibhāga Yoga (गुणत्रयविभागयोग)
gunas
Summary
Krishna describes the three guṇas — the three qualities that bind every being. Sattva is clarity, harmony, illumination; it binds through attachment to happiness and knowledge. Rajas is activity, passion, restlessness; it binds through attachment to action and reward. Tamas is dullness, inertia, confusion; it binds through ignorance and sleep. All three operate constantly in everyone; what changes is which one is dominant in a given moment. The liberated person transcends them.
Key teaching
Most of what people call "my personality" is actually a stable mix of these three. Knowing which one dominates your day gives you precise leverage: when tamas is heavy, move the body; when rajas is hot, slow down; when sattva is present, do the deepest work you have available.
Modern application, what to do today because of this
Audit your day at sunset using the three. What dominated this morning? This afternoon? Now? Over a month of doing this you will see your guna fingerprint. The point of seeing it is not to change personality; it is to ride the wave instead of being thrown by it.