| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Balancing Act: Create an Inspiring Life Mentally, Physically and Spiritually | 978-1-893074-01-9 (1-893074-01-3) | 1996 | David Essel · Kristen Schuerlein |
| How to Break Through Your Mental Barriers for Success | 978-1-893074-00-2 (1-893074-00-5) | 1996 | David Essel |