- Retreat: Time Apart for Silence and Solitude (1995)
- Sacred Journeys in a Modern World (1998)
- Sacred America: The Emerging Spirit of the People (1999)
- Ten Poems to Change Your Life (2001)
- Chasing Rumi: A Fable about Finding the Heart's True Desire (2002)
- Ten Poems to Open Your Heart (2003)
- Risking Everything: 110 Poems of Love and Revelation (2003)
- Ten Poems to Set You Free (2003)
- Ten Poems to Last a Lifetime (2004)
- How Rembrandt Reveals Your Beautiful Imperfect Self: Life Lessons from the Master (2005)
- Seven Sins For a Life Worth Living (2005)
- Dancing with Joy: 99 Poems (2006)
- Ten Poems to Change Your Life Again and Again (2007)
- For Lovers of God Everywhere: Poems of the Christian Mystics (2009)
- Saved by Beauty: Adventures of an American Romantic in Iran (2011)
- Ten Poems to Say Goodbye (2012)
- Twenty Poems to Bless Your Marriage: And One to Save It (2012)
- Keeping the Faith Without a Religion (2014)
- Dropping the Struggle: Seven Ways to Love the Life You Have (2016)
- Ten Poems for Difficult Times (2018)