I can tell that something is 'weighing on his mind'. [=that he's worried about something]
She was watching him closely as he spoke, 'weighing him up'. [='sizing him up']
The bad news is really 'weighing on' me.
(..) what I have seen, Your Grace. I have seen you listen to your counselors. I have seen you lean on their experience when your own was lacking and weigh the choices they put before you. And I have seen you ignore your counselors... because there was a better choice. (..)2015 TvShow: Game of Thrones Title: Kill the Boy Season: 5 Episode 5