Quotation על ברכות 120:7

Perhaps we can understand this better in light of Berachot 54 that "one must recite a benediction when he experiences something he perceives as a blessing as well as when he experiences something which appears to him as evil." The Talmud there on folio 60 goes so far as to say that even when we experience something which we perceive as evil we must accept it joyfully. ...