(Someone's) made his/her own bed; now let him/her lie in it.
Meaning: Someone has caused his/her own problems; he/she will have to solve them himself/herself.
Example: Cherry really hurt the feelings of the crowd after she spoke on stage. She now has to deal with some negative publicity. She's made her own bed; now let her lie in it.
Last week's idioms:
have (one's) hands full
in the red
live and let live
over (one's) head