"Nagging guilt" refers to a feeling of remorse or regret that keeps persistently bothering or annoying a person's mind.
Sentences with «nagging guilt»
Just over 40 % said they rarely feel that urge to return their purchases, and the rest never feel nagging guilt. (creditdonkey.com)
Productive people know how to weed out non-critical items in their task lists so they can stay focused and avoid the nagging guilt of a task that just won't get done. (entrepreneur.com)
At the same time, I always felt a nagging guilt, a gaping hole, in my prayers. (relevantmagazine.com)