I got the book as a reference from one of Keating's book. It is fantastic!! I recommend that all who face any disturbing addiction to read this book and indeed if you think you don't, read it and you will be surprised what you are addicted to. May shows the neurological aspect of addictions and very important he discusses the travials that occur during recovery. How your body adapts and readapts to habits and substances.
He says the root of the problem is in the psycho-toxins in our sub-conscious and recommends grace and contemplative prayer as a remedy. Where we let go of trying to solve it ourselves and allow God to heal us, to heal from the root. Here is where keating's book is useful for keating then expoundes on Mays recommended contemplative prayer namely, the prayer of silence of letting go.
The healing takes time and if you are looking for a quick fix, then forget this but if you want a root solution then pick this up. May says the beginning of a solution is when you say "I have a problem, I need help", God the healer, awaits to help you. May shows how to make an appointment, keating shows how to have a session and take the anti-bodies.