get something off your chest
/ˌɡet ˌsʌm.θɪŋ ɒf jə ˈtʃest/idiom
to talk about something that has been worrying you
облегчить душу, выговориться
Русский аналог: «снять камень с души»
Обычно о признании или обиде, которую долго держали в себе: I need to get something off my chest.
“I need to get something off my chest.”
“Talking to her helped me get it off my chest.”
“If something’s bothering you, get it off your chest.”