Kicking a Habit

Even after the year that was 2020, I've spotted countless articles and media outlets "helping" people set New Year's resolutions and kick bad habits. Whilst I'm not one to usually set a resolution, this year I want to do more of what I love which includes these articles. So now the thesis is in and I had a Christmas break (WAHOOO), what can science tell us about habits, whether breaking or forming them?