No mesorah
The yomim noraim days of rosh hashanah and yom Kippur is a SERIOUS time of teshuva and starting the year with Hashem with a fresh start however it should not be a stressful or depressing time as much as yom Kippur is a day of fasting and lots of davening etc…..
In regards to your question. I know that not the entire day but
ANYTIME that I will THINK about it I am fortunate to immediately appreciate and count my blessings for everything Hashem has given me and continues to give me bli ayin Hara and that is more than enough to be thankful and appreciative to Hashem and happy with my lot in life no matter where a person is holding. If it may be in how his financial balance is daily or in life’s issues he has to deal with. These are all for a person’s good and benefit and that reason in itself is enough for a person to NEVER have any excuse to complain or be sad against Hashem like the complainers did in the desert and we’re punished for it.
May we all see the beauty in our lives and appreciate and count our blessings every day and thank Hashem for everything