be downhill all the way

Từ điển Oxford Advanced Learner 8th

be (all) downhill | be ˌdownhill all the ˈway idiom
(informal)
1. to be easy compared to what came before
•It's all downhill from here. We'll soon be finished.
2. to become worse or less successful
•It's been all downhill for his career since then, with four defeats in five games.
•I started work as a journalist and it was downhill all the way for my health.
Main entry: ↑downhill_idiom