קבלה על אבות 1:15

From the above, we find that there are four sources of all the bad character traits. These are arrogance (including anger, which adheres to it), idle chatter, lust for pleasure and depression. Their sources are the four Kelipot of the Yetzer HaRa (The Evil Inclination) in the fundamental soul. The opposites of these are four good character traits whose sources are the four good elements of the fundamental soul. These are;
1) Humility. This is a total sense of unimportance. Such a person distances himself from any kind of anger, because anger is a result of haughtiness.
2) Silence. Except when he is occupied in the study of Torah and mitzvoth or in the physical needs of the body or for the needs of others, he acts as if mute, as one who cannot open his mouth.
3) He despises all physical pleasure or unnecessary excesses.
4) He is always happy with his lot. This is because he realizes that it is all from above and everything that G-d brings about is for the good. This attitude also results in alacrity with perfect joy in serving his Creator, as scripture states²⁴Psalms 119, “I rejoice in your words (O G-d) as one who has discovered vast treasure.” Similarly our sages stated, “Make Torah study your permanent priority and your occupation a temporary one”.