break the habit of a lifetime
US /breɪk ðə ˈhæbɪt əv ə ˈlaɪftaɪm/
UK /breɪk ðə ˈhæbɪt əv ə ˈlaɪftaɪm/
1.
to stop doing something that you have been doing regularly for a very long time
:
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It's hard to break the habit of a lifetime, but I'm trying to eat healthier.
•
After years of smoking, he finally decided to break the habit of a lifetime.