strike a balance
Find a compromise, as in We have to strike a balance between what we want and what we can afford. This expression alludes to accounting, where it signifies finding a profit or loss by weighing income versus outlay. [Mid-1800s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.