Once, a troubled young man sought guidance from the Rebbe, Reb Moshe of Kobrin. The weight of life's challenges and financial struggles was clearly visible on the man's perturbed face. Noticing the distress etched on this young man's features, the Rebbe inquired about the cause of his deep distress. While acknowledging the validity of the young man's sadness, Reb Moshe told him that he still has to make an effort to cheer up. First and foremost, because as the Gemara (סנהדרין מו ע"א) teaches us, when a Yid is in pain, the Shechinah, so to say, suffers too. He encouraged the young man to strive for cheerfulness despite his hardships, emphasizing that doing so would not only lighten his own burden but also bring relief to the Divine.
Reb Moshe then offered practical advice, urging the young man to cast away his feelings of depression and assured him that by doing his part and ensuring to cultivate happiness, he would surely witness the assistance of Hashem in overcoming all his problems.
The Rebbe then emphasized that while it is commonly believed that distress can be beneficial, (in Yiddish - צער העלפט) it not only fails to provide help but also has a detrimental effect on both, one's physical and financial well-being. So much so that "עס נעמט צו העלפט געזונט און העלפט פּרנסה" - It takes away half the health and half of the parnassah. (In Yiddish, the word for "help" is the same as the word for "half," suggesting that distress not only fails to provide assistance but also diminishes health and financial stability by half).
Reb Moshe concluded by quoting his rebbe, Reb Mordechai of Neshchiz, who used to say that only one concern is allowed, which should be, "why we are concerned".
(אמרות טהורות קוברין עמוד לה)