Amidah: Divrei Binah: Sustenance: A Defining Moment

“Bless on our behalf, God, our Lord, this year.” A complete blessing can fall only on that which has achieved a certain quality of completion. The Zohar describes a day lived to is fullest as a complete day.

We also know that a person can acquire his portion in the World to Come ina s ingle moment; we would say, a single complete moment.

It is for such a year that we pray: A year lived to its fullest, in which each day is complete, so that it can be a complete year and receive complete blessing. (Divrei Binah , Vayeilech)