| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Confidence: Build Unbreakable, Unstoppable, Powerful Confidence: Boost Your Confidence: A 21-Day Challenge to Help You Achieve Your Goals and Live Well | 978-1-5174-8328-9 (1-5174-8328-X) | 2015 |
| Confidence: Build Unbreakable, Unstoppable, Powerful Confidence: Boost Your Self-Confidence | 978-1-5028-9630-8 (1-5028-9630-3) | 2014 |
| Motivation: Getting Motivated, Feeling Motivated, Staying Motivated: Motivation Psychology - Ultimate Motivational: A Practical Guide to Awaken Your Inner Motive | 978-1-5030-9326-3 (1-5030-9326-3) | 2014 |