What is New in New Year

New. Always a good word. What makes something new? Does it mean something old like the old year is not as good? Or is it just past? Something new is current and something old is past? However if it is really old it seems it becomes more valuable. The good old days were once just the old year we were happy to get rid of. It seems it is perspective. My brother got a new dog for Christmas. His old one died. I still have the same old one. Kind of makes me happy.