I had a good friend last fall who was depressed, and thought it was possession or oppression. I tried very hard to dissuade her, but she was obsessed with the supernatural.
So she had this 2 hour deliverance ministry thing performed over/on/under etc, her. She was drained and devastated! In fact, I would go so far as to say it almost destroyed her. She still has not recovered from the deliverance session!
I beg you not to do this thing.
On another aspect of this topic, a FB friend who has fibromyalgia and bipolar disorder, was in a lot of pain. This deliverance person came onto her post and started screaming it was all demons, and she needed to be delivered. When my friend denied that her disease was caused by demons, then this same so-called friend started screaming at her that her mental illness was demons and she was possessed.
I came along at that point, and soundly rebuked this person and her "deliverance ministry." Her reply was that I didn't know the Word of God. A couple of pages later of me posting, and she gave up, but threatening to study more and come back and show me conclusively demons were the cause of everything.
So, again, please get church members and solid Christians to pray for you. I have had some amazing things happen, especially to my emotions, when prayed for by solid, Bible believing Christians. But do not get sucked into this lie from the devil, craziness, ok?