on an even keel

Từ điển Oxford Advanced Learner 8th

on an even ˈkeel idiom
living, working or happening in a calm way, with no sudden changes, especially after a difficult time
•Business is now back on an even keel after the postal strike.
•Setting her life back on an even keel after their break-up had been incredibly difficult.
Main entry: ↑even_idiom