zero regrets(что сделал что-л.: "People who have moved here from the prairies… Worth it? Regrets? Should have done it sooner?" "Moved out in 2005, zero regrets, don’t miss Alberta at all (except family/friends). Housing situation is a nightmare but our preference is still to live here." (Reddit)ART Vancouver)
can't do something to save your life(if you say that someone can't do something to save their life, you mean that they are extremely bad at that thing: I can't draw to save my life. Bullfinch)