I've found the best times to build new habits are when my existing habits are already being disrupted. It gives a "clean slate" effect where I can change things as radical as my sleep schedule, my eating habits, what have you when the old habits are already disrupted. In this way, the New Year absolutely fits the bill: the hectic holiday season, at least for me, disrupts all of my normal rhythms of day to day life, and I find myself yearning in January for a good amount of boredom, at least for awhile.<p>I also use things like business trips that have me away from home for a week, or planned vacations. Beforehand I get whatever I want ready, be it a home workout routine, a gym membership, what have you and then once all my routines are out of sorts, I can leap straight into a new set of them with seemingly far less friction.<p>YMMV of course.