Most refer to this as New Years Day. I call it International Hangover Day because countless tens of million all over the world woke up feeling sicker than they have felt all year. The halfwits all drank waaaaay more than they should have and feel like death today. I and 2 friends opened a bottle of sherry and had only 2 small glasses each. We sang and played guitar in front of the fireplace, and welcomed in the new year. I woke up feeling 100%.
I always feel moderately positive when a new year starts. But after like a week, the novelty feeling just wanes a bit. Life is what you make it, though.