Over the years, I have noted that the number of new clients spikes a few times of the year, but most significantly right after the new year. Out of curiosity, I typed "New Years Resolution Divorce" into Google and got 540,000 results in .29 seconds. While not all of the search results were on point, many were extremely interesting. It turns out that my intuition about this topic was right and that there are several reasons for it.
One article on Salon.com put divorce up there with weight loss on New Years resolution lists. Also cited in this article was that affairs are often discovered around the holidays. Another article linked above attributed it to "new year, new life". Another article claimed that the holidays create a lot of pressures at the end of the year that combine to put stress on people in unhappy or weak relationships. Family, financial woes, etc. associated with the holidays add to the stress. Turning over a new leaf to start over and improve ones life was another reason given. This seems to be a logical explanation for a clearly difficult and perhaps heart wrenching decision.
In my experience, people with children often want to wait until after the holidays for the sake of the children. There is also the hope, perhaps overly optimistic, that the divorce will be completed by the beginning of the next school year. These people tend to be in the "improving ones life" camp.
So as divorce lawyers, we hope to avoid or at least resolve in advance the holiday visitation disputes that inevitably crop up, then relax and enjoy the holiday as we await the busy season to begin.