You certainly need not be afraid of going into unconsciousness, for it is not unconsciousness that you would go into, but simply the inner consciousness.
Shakespeare was to the French classicists a drunken barbarian of genius; but his spontaneous exuberance has lifted him higher than their willed severity of classical perfection.
If the mind and the vital can feel and accept the soul’s sheer love for the Divine for His own sake, then the sadhana gets its full power and many difficulties disappear.
Your question about Yoga bringing merely a feeling of Power without any result was really very strange. Who would be satisfied with such a meaningless hallucination and call it Power?
Certainly, the Divine must be such a certitude not only as concrete but more concrete than anything sensed by ear or eye or touch in the world of Matter; but it is a certitude not of mental thought but of essential experience.
For the moment I need only say that the Divine can be and is everywhere, masked or half-manifest or beginning to be manifest, in all the planes of consciousness.
No lasting superstructure can be erected except on a solid basis of true Knowledge. The feet must be sure of their ground before the head can hope to kiss the skies.