Useless Worries
When one fails to control one's thoughts and direct them towards achieving a good end, one may often feel apprehension or treat events that have not happened as if they have occurred and become led astray by grief, distress, worry and fear.
Someone who has a young person studying for a university exam, for example, may make up scenarios before the exam takes place of what might happen in the case that his child fails the exam. "If, in the future, my son cannot find a good job and earn enough money, he will not be able to marry. Even if he marries, how will he be able to afford the expenses of a wedding? If he fails the exam, all the money spent on the preparatory courses will have been wasted and, moreover, we will be disgraced in the eyes of people. What if my best friend's son passes and my own son fails…?"
These misapprehensions go on and on. This person's son, however, has not even taken the examination yet. Throughout his life, someone who is distant from the religion cannot resist such useless worries. There is surely a reason for it. In the Qur'an, it has been related that the reason why people cannot be relieved of useless anxieties is their lending ear to the whisperings of satan:
(Satan)
"Most certainly I will lead them astray and excite in them vain desires…" (Surat an-Nisa: 119)
As seen in the above verse, he who is occupied with futile anxieties, who forgets Allah and does not think clearly, is always open to the whisperings of satan. In other words, if man, deceived by the life of the world, does not exercise his will-power and act conscientiously and if he lets himself drift in the course of events, he comes completely under the control of satan. One of the most crucial patterns of behaviour of satan is his giving people anxieties. Therefore, all misapprehensions, pessimism and anxieties such as "what will I do if such-and-such happens" contrived in the mind are caused by the whisperings of satan.
Allah shows people the way to save themselves from this situation. In the Qur'an, Allah advises people that when an evil impulse from satan provokes them, they should seek refuge in Allah and remember Him:
As for those who have taqwa, when they are bothered by visitors from Satan, they remember and immediately see clearly. But as for their brothers, the visitors lead them further into error. And they do not stop at that! (Surat al-A'raf: 201-202)
As stated in the verse, someone who reflects sees what is right, and someone who does not goes wherever satan drags him.
The important thing is to know that these thoughts will be of no use to the person and will, on the contrary, hamper him from thinking the truth, reflecting on important matters, and therefore purifying the mind from these useless thoughts. Man can think properly only if he frees his mind from futile thoughts. In this way, he "keeps aloof from what is vain" as Allah commands in the Qur'an