Αυθεντικό κείμενο - Αγγλικά - I can't admit or come to grips

I just wanna know what't means the second parte Come to grips, I might imagine what the thing is that I got a bit problem with the Grip word i listen whit get a Grip or things like that but never after Come so I wanna know what it menas if is a Idiom or something like that or I just that the person can't get a mental compusure, thanks