This is a very good article on praying that may inspire you to read his book with the same title. The other book this author has written, Where the Hell is God?, is in our parish library.
It is especially comforting when he talks about the expectations we have of our prayer life. He says, ” The perfect is the enemy of the good. Rather than give up on prayer, the good spirit encourages us to do what we can, from where we can, as we can. Some prayer is better than no prayer.”
Give it a read: http://www.thinkingfaith.org/articles/20130712_1.htm