Sri Aurobindo
Letters of Sri Aurobindo
Volume IV - Part 2
It [a troubled state of mind] is because you entered on a wrong movement, taking the lower vital experiences for truth. You now 
find it difficult to get rid of them because of the hold you gave them. The two lines of forces are the line of these lower vital forces and the line of the true movement of forces resting on the psychic consciousness and opening the true mind, the true vital, the true physical consciousness to the action of the Higher Force. If you persist in rejecting the former and aspiring for the latter, the struggle will diminish after a time and the true path become more and more clear. Fidelity always and at every moment is what is required of you.