get something off your chest idiom informal
C2 倾吐（心中的烦恼）;将…一吐为快
to tell someone about something that has been worrying you or making you feel guilty for a long time
I had spent two months worrying about it and I was glad to get it off my chest. 我为这事担心了两个月，很高兴把它讲了出来。