Who Is Wealthy
Chazal ask, "Who is wealthy?" and answer, "He who rejoices in his own portion" (Avos). The Chozeh taught that the portion meant here is your own unique portion in avodas Hashem. Whoever rejoices in his avodas Hashem is wealthy.
Source: Chassidus Ivdu es Hashem B'Simcha, chapter 8, p. 109