The affection of the Master of Two worlds, Leader of the Two Worlds Divine Prophet , May Peace and Mercy of Allah be upon him, was such that for the convenience of the Muslim Nation he fixed supplications and invocations for every occasion. At the same time our laxity is such that it does not cross our mind that there might be a supplication for the situation that we are face to face with. Thus in came to my heart that we make these supplications a part of our routine so as to benefit from their reward.
(Azkar-e-Masnoona, The Invocations According to Sunnah)