The difference between Spirituality and Religion

I was brought up in a Christian family. My dad is a Lutheran and my mom claims to be a "non-practicing Catholic" (whatever that means). I went to Catholic school K-8th grade and by the time I entered high school I started questioning my faith. I started wondering how so many religions can truly believe that their way is the only "right" way. I mean, dont you find this a little odd? I do believe in a higher power but I try not to label myself as one kind of religious believer. I pick and choose areas of tradition and ritual that I believe bring me closer to God. I guess I tend to practice a spiritual lifestyle rather than a religious one. I try to "feed" my spirit by being helpful to others, and believe that whatever brings good into people's lives is of the divine. I have always been confused by the distiction between a spiritual lifestyle and a religious one? What are your opinions as to the difference between spirituality and religion?