This quote about praying in a state of appreciation vs supplication (or desperation) is most useful in regard to all types of healing. Plus it naturally calms us.
“The correct prayer is therefore never a prayer of supplication, but a prayer of gratitude. When you thank God in advance for that which you choose to experience in your reality, you in effect, acknowledge that it is there…in effect. Thankfulness is thus the most powerful statement to God – an affirmation that even before you ask, I have answered. Therefore never supplicate… Appreciate.”
~ Neale Donald Walsch