Contentment

I am beginning to wonder if contentment is an achieveable goal for me. I don't struggle with wanting more stuff, I'm happy with weight, I'm 31 and am ok with that, and I know there are blessings all around me. There is just one area in my life I can't seem to wrap my arms around. It is a personal struggle that only a few even know exists.
I know that God can be everything to me if I will let go and let him, but the human side of me won't let go. I look back and when I have let go my life is different but not in a good way. My one little habit helps make so many other areas of my life go well. I know it is wrong and yet.....
We are reading the book Classic Christianity by Bob George at church and it has really made me think about the errors in my life, and has made me realize there are a lot of truths that I need to cling to.