R’ Shimshon Refael Hirsh says that the fact that the tribes of Shimon and Levi were scattered all over when during our Galus, was of great benefit to Klal Yisroel.
Klal Yisroel needs people with fiery and proud dispositions, who keep alive the energy, the courage, and the noble Jewish pride, especially in Galus. Most of the teachers and Batei Midrashim came from Shimon and Levi.
R’ Yisrael Kanarek told me about a Yeshiva Bachur in prewar Europe, who was extremely quiet. This caused him to learn a tremendous amount of Torah, and he became a great Talmid Chacham. Very often quiet people have much less Aveiros than others. No Lashon Hara, Ona’as Devarim, Ga’ava, Ka’as, embarrassing others, etc. They can be much purer and holier than outgoing people.
On the other hand, a loud type of person can have loads of Mitzvos, if he is always speaking to others in Divrei Torah, or words of Chesed that help people.
The Yetzer Hara wants us to belittle the natural capabilities that Hashem gave us, and to desire instead what other people have. In Ruchaniyus this may sometimes be helpful, as Chazal say: ִק ְנ ַאת סוֹ ְפ ִר ַתּ םי ְר ֶבּ ָח ה ְכ ָמה ב"ב כא א Jealousy between scholars motivates them. But if your Kin’ah just leaves you unhappy and frustrated, you need to learn the Mussar Seforim.
