Sri Aurobindo
Letters of Sri Aurobindo
Volume II - Part 1
Remember first that an inner quietude, caused by the purification of the restless mind and vital, is the first condition of a secure sadhana. Remember, next, that to feel the Mother’s presence while in external action is already a great step and one that cannot be attained without a considerable inner progress. Probably, what you feel you need so much but cannot define is a constant and vivid sense of the Mother’s force working in you, descending 
from above and taking possession of the different planes of your being. That is often a prior condition for the twofold movement of ascent and descent; it will surely come in time. These things can take a long time to begin visibly, especially when the mind is accustomed to be very active and has not the habit of mental silence. When that veiling activity is there, much work has to be carried on behind the mobile screen of the mind and the sadhak thinks nothing is happening when really much preparation is being done. If you want a more swift and visible progress, it can only be by bringing your psychic to the front through a constant self-offering. Aspire intensely, but without impatience.