לֹא אָכַלְתִי בְאֹנִי מִמֶנּוּ כו יד
The Torah forbids a person to eat Kodoshim when he is an Onen (the same day his close relative died) and the Sefer HaChinuch explains that Kodoshim are: שֻׁלְּחַןֶּגָבוֹהֶַּ the “table” of Hashem, and it’s not right to come to a Melech’s table with worries and big pains in your heart, like it says: כ יֶּאֵּיןֶּלָבוֹאֶּא לֶּשַעַרֶֶּּ הַמ ל ךְֶּב לְּבוּשֶּשָקֶֶּּאסתרֶּדֶּב It is not proper to come before the king’s gate while wearing sackcloth. Not being B'simcha when eating Kodoshim is a form of disrespect to Hashem. This is a new understanding of the greatness of being B'simcha! It’s Kavod Shamayim when you show that you are happy in Hashem’s beautiful world, and it’s actually a chutzpa and a Zil'zul in His Kavod when you kvetch and become sad and you complain.
No wonder Simcha is such a burning issue; and even your body dislikes sadness and anger, etc. How important it is to make Simcha and Bitachon a high priority in your entire Avodas Hashem.
