1. My elderly parents’ house is a millstone around my neck. They are unable to keep it up and I have to do all the repairs myself or pay someone to do them for me. I wish they would sell the house and rent an apartment instead.
2. This year’s taxes have become a millstone around my neck. If I had just gotten them done early, they wouldn’t be stressing me out now.

Synonym: albatross around (one’s) neck. A millstone is a very heavy stone on which one grinds grain in a mill. If a millstone were tied around one’s neck, it would be a great burden.