Sebastian Goff

Unfortunately, there is no information provided about the author Sebastian Goff in the given documents.

Without additional details, it's not possible to create a summary of the author's background, qualifications, or other works.

The only information available is that Sebastian Goff is the author of the book "Dark psychology".

To provide a more comprehensive summary about the author, more details would be needed, such as their education, professional experience, other publications, or areas of expertise in psychology or related fields.