Rosh Hashanah is the Jewish New Year.
While the translation of the expression Rosh Hashanah is "New Year", a more literal translation would be "The head of the year".
Why don't we just call our new year "New Year", or "Start of the Year"?
One of the ideas behind the name Rosh Hashanah is that, just as the human head contains information about the rest of the body, Rosh Hashanah is a period of time that represents the entire year. Just as a map can represent thousands of kilometers of land on a few centimeters of paper, the two days of Rosh Hashanah represent the 365 days of the year.
That is why our sages explain that, according to the prayer and behavior of the person during Rosh Hashanah, so will be the luck of the year.
Every minute counts. Every hour is crucial. It's up to each of us to make the most of our time and ensure, through our own efforts, a good and sweet year.
May we all be inscribed and sealed for good in the books of life and sustenance, both material and spiritual."