Yogananda: Soul Nervousness
There is a common form of nervousness: soul nervousness. The soul is so identified with the body that it has forgotten its real nature. Soul nervousness can be destroyed only by meditation—by transferring the attention from your nerves to the perception of Infinite Happiness within, transferring your attention from the bundle of bodily sensations to the infinite nature, which is your true Self.
– Paramhansa Yogananda