Self-Discipline: Mental Toughness Mindset: Increase Your Grit and Focus to Become a Highly Productive (and Peaceful!) Person (Master Your Self Discipline)
| Country | USA |
| Brand | Penguin |
| Manufacturer | Viking Penguin, Inc. |
| Binding | Paperback |
| ReleaseDate | 1987-06-16 |
| UnitCount | 1 |
| EANs | 9780140104783 |