Accept the bad along with the good, as in You can't expect to close a lot of sales every week—you have to take the rough with the smooth. This adage was first recorded about 1400. Also see take the bitter with the sweet.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.