bite the bullet

US /baɪt ðə ˈbʊlɪt/
UK /baɪt ðə ˈbʊlɪt/
"bite the bullet" picture
1.

to endure a difficult or unpleasant situation

:
I had to bite the bullet and work extra hours to finish the project on time.
She decided to bite the bullet and apologize, even though she felt she was in the right.