Die Macht der Disziplin: Wie wir unseren Willen trainieren können

The book references numerous experiments and studies—I'm curious how he chose which ones to highlight and how he interpreted their relevance.

Some strategies resonated with me, but I wonder if others have tried them and seen real changes in their self-control.

This framing really shaped the whole book, and I'm curious whether it was based on his personal experiences or specific research findings.