رَضيَ بالذُّلّ مَن كَشَف ضُرَّه لغيرِه
He who tells his difficulties to others should expect humiliation.
In Islam, it’s considered bad practice by a Muslim to complain to others about the difficulties he’s going through. First, his complaints should be directed to Allah in the form prayers & supplication, because Allah is the infinite power able to ease or eliminate those difficulties. Secondly, instead of just complaining, a Muslim should actively work to alleviate those difficulties, therefore, transforming the challenge of hardship to a positive changing force. Thirdly, people usually don’t like a person who’s constantly complaining and spreading negativity. Rather, they like someone who is positive and spreading hope. Therefore, complaining to others not only could have no effect, one could get ridiculed and humiliated by doing so.
Translation of this quote was inspired by this sermon (in Arabic).