worn to a frazzle
In a state of nervous exhaustion, as in The very idea of moving again has us worn to a frazzle. This expression transfers frazzle, which means “a frayed edge,” to one's feelings. [Late 1800s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.