К-341
HE ВСЁ КОТУ МАСЛЕНИЦА (, БЫВАЕТ И ВЕЛИКИЙ ПОСТ) (saying) life is not made up of pleasures alone - troubles and difficulties also occur (said when a time full of worries and cares comes to replace a period that is pleasant and carefree): - every day is not Sunday (a holiday)
into each life a little rain must fall
(in limited contexts) all good things (must) come to an end.
Большой русско-английский фразеологический словарь. — М.: ACT-ПРЕСС КНИГА.
С.И. Лубенская.
2004.