“My Appointment with a Psychologist” by Krish Nair and Anoop T. Unnikrishnan (Authors). This e-book is very helpful to make you understand your mistakes in the SSB  during Psychological testing, also you can learn a lot of things from this e-book to improve your Psychological test during SSB interviews. You can download this e-book free of cost from the link provided below, please share the stuff to help others also.