We read the following passage from the Mother’s writings:
“You must have a strong body and strong nerves. You must have a strong basis of equanimity in your external being. If you have this basis, you can contain a world of emotion and yet not have to scream it out. This does not mean that you cannot express your emotion, but you can express it in a beautiful harmonious way. To weep or scream or dance about is always a proof of weakness, either of the vital or the mental or the physical nature; for on all these levels the activity is for self-satisfaction. One who dances and jumps and screams has the feeling that he is somehow very unusual in his excitement; and his vital nature takes great pleasure in that.
If you have to bear the pressure of the Divine Descent, you must be very strong and powerful, otherwise you would be shaken to pieces. Some persons ask, “Why has not the Divine come yet?” Because you are not ready. If a little drop makes you sing and dance and scream, what would happen if the whole thing came down?
Therefore do we say to people who have not a strong and firm and capacious basis in the body and the vital and the mind, “Do not pull”, meaning “Do not try to pull at the forces of the Divine, but wait in peace and calmness.” For they would not be able to bear the descent. But to those who possess the necessary basis and foundation we say, on the contrary, “Aspire and draw.” For they would be able to receive and yet not be upset by the forces descending from the Divine.”
[Foundation of Yoga]