Moses then added his own blessings and warnings to those given by G‑d at Mount Sinai.
Drawing Down G‑d’s Blessings
וּבָאוּ עָלֶיךָ כָּל הַבְּרָכוֹת הָאֵלֶּה וְהִשִּׂיגֻךָ וגו':
(דברים כח:ב)
[Moses promised the Jewish people, “If you remain faithful to G‑d’s covenant,] all the following blessings will pursue you and overtake you.”
Deuteronomy 28:2
We are taught that on the Jewish New Year (Rosh HaShanah), G‑d decrees our livelihood and health for the coming year. And yet, we pray every day for health, sustenance, and many other Divine blessings. Is this daily prayer necessary, in that all has already been decreed on Rosh HaShanah?
This verse provides the answer to this question: G‑d’s blessings both “pursue” us and “overtake” us. On Rosh HaShanah, all the blessings necessary for their respective purposes descend (“pursue” us) to a certain level of reality where they wait in storage to be drawn down further (“overtake” us) into our physical world. The vehicle for bringing blessings down to us is our daily prayer and devotion to G‑d.1

which is it ?? you wrote, "We are taught that on the Jewish New Year (Rosh HaShanah)"
scripture tells us this is the seventh month found in Leviticus chapters 16,23 25 and Numbers chapter 29.
The "first " month is at Passover found in Exodus chapter 12
does the "new year" start in the first month or the seventh month.
Can you explain please ? thank you ??
Perhaps, I can explain. The "New Year" has nothing to do with the calendar year. The first month is when we were rescued from Egypt. That was when we went from one lifestyle (slaves) to another (chosen people). As such, the "New Year" is when HaShem takes His accounting. Perhaps it would be easier for you to think of a secular calendar, where the "New Year" is Jan 1; but, taxes are due on April 15th. HaShem does His accounts on His New Year.
One is the head of the Year and the other is the head of the month hope this helps
Yes that helps me, thank you for that explanation
Greatly appreciated and makes sense to me as I learn.