Rabbi Shalom Arush's book "B'Gan Ha'Osher" - The Garden of Bliss, about livelihood. Rabbi Arush teaches us to trust in Hashem, and helps us learn how to make a living without all the stress. Plus tips for one who is already in debt. We ultimately learn "Eize hu ashir? Ha'Sameach b'chelko!" "Who is rich? One who his happy with his portion!"