New Year's resolution
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On 3 January, birth rates would skyrocket across the Adipose nursery worlds as host species tried to stick to their New Year's resolutions to lose weight. (PROSE: Time Traveller's Diary)
On New Year's Day 2019, the Thirteenth Doctor made it her New Year's resolution to intercept a reconnaissance scout Dalek that had possessed Lin. (TV: Resolution)
Indeed, she once stated that her resolution every year was to defeat the Daleks. (PROSE: Scary Christmas and Unhappy New Year)