The Divine Dance: Exploring the Mystery of the Trinity is a CD of Richard Rohr, OFM lectures on the Trinity. It is by far the most profound and helpful discussion/explanation of the doctrind of the Trinity I have ever experienced.
In my research about mystical traditions across cultures and religions, I have been surprised to find the concept of the trinity to be central to each. It is a doctrine that has been central to the teaching of the church from early on and I believe the Church universal has suffered from ignoring this mystery of the divine. This prayer by Richard Rohr gives a glimpse of the mystery:
God for Us, we call you Father
God Alongside us, we call you Jesus
God Within us, we call you Holy Spirit
You are the Eternal Mystery
That enables, enfolds and enlivens all things,
Even us, even me.
Every name falls short of your Goodness and Greatness
We can only see who you are in what is.
We ask for perfect seeing.
As it was in the beginning, is now and ever shall be, Amen

I know many people who suffer from addictions and I offer these thoughts:
FIRST I do not think it is helpful to look at a compulsive behavior as sin. Although it certainly is on one level because it interrupts the flow of love from God to us, dealing with a compulsion simply as sin usually doesn’t erradicate the compulsion.
SECONDLY I have found Gerald May’s book Addiction and Grace very helpful to understand the neurological basis of a habit becoming a compulsion. In brief, there are neurological pathways in our brains that are laid down as if in concrete and they do not go away. Those pathways demand the compulsion.
THIRDLY The way of Grace is to layer a healing habit on top of it. For that I recommend the Jesus Prayer – practice this ancient prayer “Lord Jesus Christ Have Mercy on me a sinner” repeatedly. Do not just say it once but repeat it outloud and in your mind over and over again. I do this for a minimum of half an hour a day intentionally. Over time it becomes a prayer always on your mind.
FOURTHLY – a compulsion can be the doorway to grace on a level so profound it outdoes the compulsion. M. Scott Peck wrote about this in Further Along the Road Less Traveled. This book is a series of lectures and one of them is about the specific gift of being an alcoholic In his experience, those with addictions have an unusually deep desire for God.
FIFTHLY – You cannot fight a compulsion on your own. It isn’t a matter of the will alone. Do not let your shame keep you from getting the help you need. Personally, I would begin with a Christian doctor and then a 12 step group.
FINALLY – the Cross has covered this. Nothing you do can change the fact that God loves you just as you are, compulsions and all, whether you like it or not. This compulsion just may be a way God is bringing you to God’s heart in a far deeper way.