Discouragement from Vital Attacks

These attacks should not discourage you. There are always moments—so long as there is not the complete basis in the physical when old movements seem to revive. But so long as it is only a rush of an outside force churning up the subconscient and it does not last, it does not at all mean that the progress is not there. We have to deal with all the complexity of the human consciousness in its hidden parts as well as on its surface—and there are layers and layers of the consciousness in which something may lurk of the old reactions, but each conquest makes the control stronger and brings the full purification nearer.

Ref : Letters on Yoga Vol.III