How can one distinguish between an affliction and a punishment, and what is the way to overcome frustration and the fear of returning to sins, and to regain vigor and determination in studies and life, with complete certainty in the power and mercy of Allah?

Happiness and tranquility are only attained through obedience to Allah and avoidance of His disobedience. If a servant becomes upright, then what he misses of this world does not harm him; rather, the worries of this world at that time become good for him, as he alternates therein between expiation of sins and elevation of ranks. To remedy sins and shortcomings, one must seek forgiveness and make sincere repentance to Allah. There are pieces of advice for students of knowledge to help them with the difficulties of study and the hardships of exams, in addition to supplications for fulfilling needs and the conditions for the acceptance of supplications.