Keine Ausreden!: Die Kraft der Selbstdisziplin (Dein Erfolg)

His approach seems rooted in decades of experience, but I'm curious what personal or historical influences led him to emphasize 'no excuses' so strongly.

Some tips seemed simple but powerful, yet I wonder how sustainable they feel over the long term. Did any readers see real change after applying them?

There are countless methods out there—what do you think led to the selection of the specific tools and stories in this book?