【教えて下さい】「get one's head right」の意味

「get one's head right」の意味について教えてください。下記の文にあります。目覚める。意識するとかの感じだとおもいますが？"When people start coming after your kid, you get your head right: 'This is my baby. Don't mess with my kids.' That's probably when I turned a corner," he says.