Leave a few days or a week between sessions to give the healing time to work. Many Christians ask saints and others to intercede on their behalf. People pray for others. Your chance of healing can be improved substantially if you can get others to pray for you. The scientific evidence for the efficacy of such prayers is described elsewhere.
Spiritual healing can help with any problem, mental, physical or emotional.
Healers are especially effective for musculo-skeletal problems. The medical problems which were healed by prayer are described elsewhere. Regular participation in church or your preferred spiritually based organization. Regular reading of inspirational literature of your preference. It's good to do this at least once per day, either upon awakening, during your lunch break, or before retiring.