We must constantly take care to be in a good mood. And not because you have heard something funny or because you have had a drink, but because you were awarded to justify the Creator in everything that happens, in every state, at every moment, for any question that may come up in your heart or your mind. Then you are in a good mood.
You justify the Creator for having created a wonderful world. And the more advanced your view, you see the world in greater scrutiny and depth, the more you see the wisdom and benevolence of the upper Providence, and you justify the Creator and judge the whole world to the scale of merit. Thus you become a beneficial, active part of the general soul of the world.
However, whoever has a “sour face” condemns the upper Providence with regard to himself and especially with regard to the whole world. By that he lowers not only himself but also the whole world and tips the scale against himself and the whole world.
This is the reason for all the evil in the world, for all the sufferings. After all, only the Israeli nation, those who yearn for the Creator (Yashar—El) (straight to the Creator) can change anything. They are the only ones responsible for justifying the Creator’s Providence in the vessels of the whole world, and if they don’t do that, then they are clearly the first who get hurt. The punishment also begins with the righteous since they are responsible for the world being in this state.
So we have to understand that this is a closed system and everything depends on the desires that are part of the general vessel that the Creator has created; they need to correct everything and to justify it, and bring the whole world to a perfect state. They must help the desires, which cannot correct themselves, be corrected and bring the Light to their lives until everything is finally corrected.
From the 1st part of the Daily Kabbalah Lesson 1/1/13, “Introduction to the Study of the Ten Sefirot