The Soul as like as the body needs to be fed. Note that the Soul needs a spiritual food. The spiritual food is the spiritual knowledge. The Soul will thrive if it is fed, but it will wilt if it is not fed for a some period. You need to take care of your Soul and see it develop once it will receive its spiritual portions of knowledge. The needs of the Soul, if they are satisfied, so then notice that this give to the Soul the necessary knowledge proper to make it progress in the spiritual development. Each Soul has the need to grow spiritually. But not to decrease, because it is really bad for such a Soul which spiritual needs are not satisfied, so then it degrades spiritually. And that is the spiritual regress. The Soul constantly needs to develop onwards, it is so. When spiritually sated, the Soul prospers!
NaNiYa