noun
douche
DOOSH/dˈuʃ/
An obnoxious or contemptible person, used as an insult.
The waiting man thinks the person claiming his chair is a douche.

Etymology
The insult shortens douchebag. A term for intimate washing equipment was turned into a contemptuous label for a person and then further shortened.
In context
I'm just not going to let this stuff steal my joy." Right. You can be that way with anything, work related, stepfamily related, my husband's being a douche related,