The Cafe on the Edge of the World: A Story About the Meaning of Life (Unabridged)
2025
The Why Cafe (Unabridged)
2019
The Big Five for Life (Unabridged)
2025
The Why Are You Here Cafe (Unabridged)
2024
Das Café am Rande der Welt [The Cafe on the Edge of the World]: Eine Erzählung über den Sinn des Lebens [A Narrative About the Meaning of Life] (Unabridged)
2019
Was ich gelernt habe [What I Have Learned]: Erkenntnisse für ein glückliches Leben [Findings for a Happy Life] (Unabridged)
2024