Hi raven... I would endorse what oppostate said about reading Ray Franz book 'In Search of Christian Freedom'. I've also read books by Philip Yancy, a christian writer who became atheist for a time after coming from a fundamentalist church. He found his own spiritual freedom. I've also read a book about buddhism and how it's values can be drawn on by a christian (the writer is christian himself but married to a buddhist). Also, read the New Testament in other translations like the NIV, without referring to any other publications. It's amazing the difference it makes.
Also, just going out and enjoying the nature is a very spiritual experience whether one is a believer in God or not.