I wrote this for my facebook page "Glorifying God with testimonies of Healing" check it out!His Presence is essential, so I must have His Peace, Joy and carrying His Presence. This means a personal and deep relationship with Him(a lifelong process). So if you're just starting to develop this, awesome, no worries, we are to step into His Kingdom, by doing Kingdom Work! Worship, Intimate Time, and time spent studying His Word, all draw His presence upon us. Before praying for the sick, I evaluate myself do I feel His Joy (ie..I myself must not be in a state of fear, stress, or any negative emotion, if I am, I take a few minutes of prayer asking Him for His Perfect Peace and Joy! Once His Joy is in me again, time to continue), I am responsible for being yielded to His Holy Spirit, so the atmosphere around me changes. The person that I'm going to pray for, is normally in great pain, fear and in many cases may have misinformation on His Will for healing. His Presence changes everything!
Caution! This is not a weirded out condition (outwardly), that sends people running for the bushs. Nor is it arrogance. I don't change the atmosphere He does! This is a yielded life-style to serve Him!