Sri Aurobindo
Letters of Sri Aurobindo
Volume IV - Part 2
It is indeed when the quietude comes down from above or comes 
out from the psychic that the vital becomes full of peace or of kindliness and goodwill. It is therefore that the inner psychic quietude first and afterwards the peace from above must occupy the whole being. Otherwise such things as anger in the vital can be controlled but it is difficult to get rid of them altogether without this occupation by the inner quietude and higher peace. That you should depend on the Mother for the sadhana is the best attitude, for it is indeed her Force that does the sadhana in you.