You use the expression ‘Face the Music’ to indicate that it is necessary to accept the negative consequences of previous actions.
Example in use: “Jim ran a stop sign and caused an accident; now he’s going to have to face the music.”
The term “Face the Music” was first seen in print during the mid-1800s. The earliest example comes from an 1834 edition of The New Hampshire Statesman & State Journal: “Will the editor of the Courier explain this black affair. We want no equivocation; ‘face the music’ this time.”