face up to - Phrases/Idioms
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Also, face it. Confront or accept an unpleasant or difficult situation. For example, Jane had to face up to the possibility of being fired, or Face it—you were wrong. [Late 1700s] Also see face the music.