Self-improvement books are helpful

I used to read a good number of books on self-improvement.
These books contain marvellous examples and illustrations which can inspire us to do better things in life.
I request my students to read such books.
The parameters of modern living are : success,prosperity,happiness.
These books can guide a person to achieve success,prosperity and happiness.
One such book is titled TOUGH TIMES NEVER LAST,BUT TOUGH PEOPLE DO.