Albatross around your neck

e.g. Everywhere I go, my mother makes me take my bratty little sister. She's an albatross around my neck. 

Meaning: a very difficult burden that you can't get rid of or a reminder of something you did that was wrong

Origin: In 1798 the English poet Samuel Taylor Coleridge wrote his most famous poem, "The Rime of the Ancient Mariner." In the poem a young sailor shoots a large seabird called an albatross. In those days that was considered very unlucky. Sure enough, a lot of bad things happen to the ship, and the crew blames the young sailor. They hang the dead bird around his neck.

指甩不掉的麻烦或令人想起所做错事的事物。源自长诗《老水手之歌》。