break the habit of a lifetime
US /breɪk ðə ˈhæbɪt əv ə ˈlaɪftaɪm/
UK /breɪk ðə ˈhæbɪt əv ə ˈlaɪftaɪm/

1.
改掉一辈子的习惯, 打破长期习惯
to stop doing something that you have been doing regularly for a very long time
:
•
It's hard to break the habit of a lifetime, but I'm trying to eat healthier.
很难改掉一辈子的习惯,但我正在努力吃得更健康。
•
After years of smoking, he finally decided to break the habit of a lifetime.
吸烟多年后,他终于决定改掉一辈子的习惯。