Yomim Nora’im (יָמִים נוֹרָאִים) or Yimei Ratzon (יְמֵי רָצוֹן)? Introducing An Awesome Opportunity 🌅

Are you excited for Rosh HaShannah and Yom Kippur? Are you nervous? Perhaps you're feeling both. But, where do these seemingly opposite emotions stem from? Is there a common source?