身在福中不知福

shēnzàifúzhōngbùzhīfú
to live in plenty without appreciating it (idiom); not to know when one is well off

CEDICT

to live in plenty without appreciating it; to be oblivious to the good life that one has (and hence be ungrateful)

Wiktionary

（谚语）比喻人不知足。

重編國語辭典

  1. 不知足。
  2. 生活在幸福当中，却不懂得幸福。

維基詞典

Entry Composition

1 身在 shēnzài to be located in (a place)
2 福 fú
  1. good fortune
  2. happiness
  3. luck
3 中 zhōng
  1. within; among; in
  2. middle; center
  3. while (doing sth); during
  4. (dialect) OK; all right
4 不知 bùzhī
  1. not to know
  2. unaware
  3. unknowingly
  4. fig. not to admit (defeat, hardships, tiredness etc)
5 福 fú
  1. good fortune
  2. happiness
  3. luck