do your best
Meaning: If you do your best, you do something as well as you possibly can, or to the best of your ability.
- I was upset when I didn't get into the university I wanted to go to, so my grandma hugged me and said, "You did your best, dear. Leave the rest to God."
- His father was angry with the little boy because he didn't hit a home run in the baseball game, and shouted, "You did your best? Well, your best just isn't good enough, is it?"
Arnie said he'd do his best to get some tickets for the show, so