Thus to act under the guidance coming from above, this is one side of the sadhana, the dynamic side. The other one is the discrimination between the Purusha and the Prakriti. The Purusha will calmly observe, give sanction, choose, but will realise that all this does not belong to him - all these are outside him. This is the static side of the sadhana. These two aspects constitute the basis of Yoga.
Sri AurobindoSuffering makes us capable of the full force of the Master of Delight; it makes us capable also to bear the utter play of the Master of Power. Pain is the key that opens the gates of strength; it is the high-road that leads to the city of beatitude.
Sri Aurobindo