The Force which has to be called down from above must be pure and quiet because there are all kinds of forces - it will not do to call them all. And one must have sincerity.
The Truth-power must be brought down from above into that state of peace, and this higher power - Parashakti - will directly guide the vehicle - ādhāra - and transform it.
Delight is the secret. Learn of pure delight and thou shalt learn of God. What then was the commencement of the whole matter? Existence that multiplied itself for sheer delight of being and plunged into numberless trillions of forms so that it might find itself innumerably.
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.
For the powers of our mind, life, and body are bound to their own limitations, and however high they may rise or however widely expand, they cannot rise beyond them. But still, mental man can open to what is beyond him and call down a Supramental Light, Truth, and Power to work in him and do what the mind cannot do. If mind cannot by effort become what is beyond mind, Supermind can descend and transform mind into its own substance.
God does work through both pure and impure vessels but that does not mean that one should keep nature impure for ever. When the vessel will become pure the urge for action coming from within will be a flawless, definitive action. As long as that does not happen one has to minimize one's activities.
You have a strong active nature. And this in you is a point of strength. If you can mould it rightly this will become a very great strength. On the other hand, this too is your weak point - a hindrance in sadhana.
What I cannot do now is the sign of what I shall do hereafter. The sense of impossibility is the beginning of all possibilities. Because this temporal universe was a paradox and an impossibility, therefore the Eternal created it out of His being.