What a relief it was to get everything off her chest!
He was clearly determined to get something off his chest.
I see you need to get something off your chest here.
"But if I got that off my chest, it's not going to improve the situation other than to make me feel a little better."
It's kind of having someone to be able to get something off your chest.
Thank you for letting me get that off my chest.
I just needed to get these two issues off my chest.
Or maybe it's just getting the thing off my chest.
My dad says it's best to get everything off your chest, so that's what I'm going to do.
Finally, I have to get one more thing off my chest.
Idiome