One’s “spirit” needs to be “healed” as part of “true healing”

All true healing comes from God! There are two causes for sickness, one is material, the other spiritual. If the sickness is of the body, a material remedy is needed, if of the soul, a spiritual remedy.

If the heavenly benediction be upon us while we are being healed then only can we be made whole, for medicine is but the outward and visible means through which we obtain the heavenly healing. Unless the spirit be healed, the cure of the body is worth nothing. All is in the hands of God, and without Him there can be no health in us! 
(‘Abdu’l-Baha, from a talk, October 19, 1911, Paris; ‘Paris Talks’)