“Shun spirituality that does not require commitment. Personal commitment to the  God personally revealed in Jesus is at the heart of real spirituality ...
Spirituality without commitment is analogous to sexuality without commitment –  quick and casual, superficial and impersonal, selfish and loveless – eventually a  parody of its initial promise. Deprived of commitment, sexuality degenerates into  addiction, violence, or boredom. Deprived of commitment, spirituality, no matter  how wise or promising, has a short shelf life.”
~ Eugene Peterson, Subversive Spirituality