Musar su Salmi 119:57

And now look and see how Joy includes everything! For every man who worries about the material things of this world has no rest and is always planning how to make money, and he is never satisfied with what God has apportioned to him. Therefore, the one who rejoices in his portion is rich even though he be poor, for he rejoices in the Lord who is his portion and inheritance. And so it is written : "I have said, 'My portion is the Lord' " (Ps. 119:57). And so he says : "Let the heart of them that seek the Lord rejoice!" (Ibid. 105:3).