Ma’or VaShemesh-Happiness
Ma’or Va’Shemesh;
Noah:
The main ingredient in Service of God is Happiness. Nothing can damage one’s service of the creator more than can sadness.
Be’Ha’aloticha:
One must stay far away from sadness for it is that one emotion that can lead someone to all sorts of sins.
Rabbeinu Yonah: Proverbs 17:22:
Happiness is the best cure for any disease.