Versterk de liefde in zeven dagen

The format makes the advice feel doable and actionable, but I'm curious whether this was based on research or personal experience. Did the author consider other formats?

I wasn’t expecting simple activities to create such a noticeable difference. Has anyone tried these with their partner, and what was the outcome?

With so many self-help books out there, I wonder what makes this one stand out or feel more practical compared to others.