Sri Aurobindo
Letters of Sri Aurobindo
Volume IV - Part 3
I am glad to know the disturbance was expelled last night. Now the receptivity in the body consciousness has to be kept so that it may not at all return or, if it tries, may immediately be expelled. You must always try to keep the quietude, not allow depressing 
or disturbing thoughts or feelings to enter you or take hold of your mind or your speech – there is no true reason after one has gained the inner quietness and wideness why that should be allowed to lapse and these things enter. And if the mind keeps its quietude and receptivity to higher forces only, it can then easily pass on that quietude and receptivity to the body consciousness and even to the material cells of the body.