If a man feels even a little bit for his present deplorable condition; if he attempts even to show a slight improvement; if there is a little receptive attitude; then he can be corrected and he can make progress on the path of yoga. If he is obstinate and pigheaded, if he is absolutely self-willed, if he deliberately shuts his eyes or hardens his heart against the truth or divine light - then no one can help him.
The aspirant should give his full consent, he should consent with all his being (sarva bhava) for the change of his lower nature into divine nature. He must make total, unreserved, ungrudging self-surrender to the Lord or the guru. He must have the true spirit and he must have persistent endeavour. Then only the real change will come.
Yoga can be practised only by those who are very earnest about it and who are ready to annihilate their little ego and its demands. There are no half measures on the spiritual path. Rigid discipline of the senses, and the mind, rigorous tapas (penance) and constant meditation, are necessary for the attainment of God-realisation.
The hostile forces are ever ready to overwhelm you if you are not vigilant, if you give the least sanction, or the smallest opening for them. Yoga cannot be practised if you cling to your little self, your old habits, your old unregenerate and self-assertive lower nature.
You cannot lead a double life. Pure divine life, the life of yoga, cannot co-exist with a mundane life of passion and ignorance. Rise above the petty human level to the higher level of divine consciousness.
You cannot claim freedom for your petty mind and little ego if you want to become a yogi. The lower nature with its retinue of arrogance, ignorance, and turbulence, stands in the way of the descent of divine light.
Know the truth, the Absolute. Then you are saved, you are liberated, you are enlightened, you are free. You can know Brahman only by becoming Brahman. To become Brahman is to identify yourself with the supreme soul which constitutes your divine nature. The river joins the ocean and becomes one with it. The drop mixes with the sea and becomes one with the sea.