Regarding Émile Coué & his use of imagination to help people heal themselves through the use of one's imagination:
Émile Coué, one of the great psychologists of the West, helped millions of people just through imagination to be cured of many, many diseases. His formula was very simple. He will say that, "Just you start feeling that you are okay. Just go on repeating inside the mind, I am getting better and better. Every day I am getting better. In the night while you fall asleep, go on thinking you are healthy, and you are getting healthier every moment, and by the morning you will be the healthiest person in the world. Go on imagining."
And he helped millions of people. Even incurable diseases were cured. It looked like a miracle; it is nothing. It is just a basic law: your mind follows imagination. -- Osho
Make this be your mantra! Repeat it daily with feeling!