Rabbi Sacks' 10 Short Ideas about Rosh Hashanah

 https://aish.com/what-rosh-hashanah-says-to-us/

What then does Rosh Hashanah say to us? How can it transform our lives? The genius of Judaism was to take eternal truths and translate them into time, into lived experiences. Rosh Hashanah, the anniversary of the creation of humanity, invites us to live and feel the human condition in graphic ways.

The first thing it tells us is that life is short. However much life expectancy has risen, we will not, in one lifetime, be able to achieve everything we might wish to achieve. Untaneh Tokef tells the poetry of mortality with haunting pathos:

The historian Paul Johnson once wrote: “No people has ever insisted more firmly than the Jews that history has a purpose and humanity a destiny.” He concluded: “The Jews, therefore, stand right at the center of the perennial attempt to give human life the dignity of a purpose” (Paul Johnson, A History of the Jews, Prologue). That too is one of the truths of Rosh Hashanah.