a weight off your shoulders
Meaning: You can say a weight is off your shoulders if you no longer have to worry about something or deal with something difficult.
- Thanks so much for agreeing to take care of Snoopy while I'm away. It's a weight off my shoulders knowing that a real dog lover will be looking after her.
- I think it was a real weight off Cathy's shoulders when you offered to take care of the arrangements. She's got so much else to deal with at the moment.
He has a lot to do this week, so Trevor said it'd be a real weight off his shoulders if I could