Nevuchadnetzar HaRasha was a Melech over the entire world, and his wife was also very powerful. (Medrash). He was called: "אשׁ'רֹ" and "אַרְ יֵה"; (Gemara), he roared like a lion, and he was "ֹם וְנוֹרָאו אָי". (Medrash). Yet, he was always in a state of Ka'as (anger) and Ta'ava, and always looking to swallow-up everybody. He was never satisfied, like a Rasha who is never Sameach B'chelko.
The Gr”a says that: ן חוֹטָּ ה בִּ רָּ וֹתּת הַ ינַ תִּ ר נְ יקָּ עִּ the main reason we were given the Torah was so that we should acquire the Midda of Bitachon, and he says that Bitachon means being Sameach B'chelko. The Churban came because of Sin’as Chinam, which is caused by not being Sameach B'chelko. So it is fitting that the Yidden fell into the hands of a person who had everything and was never satisfied. This week’s Parsha says: לֹא בַשָּמַיִּם הִּ יא וְלֹא מֵּעֵּבֶּר לַיָּּם כִּי קָּרוֹב אֵּלֶּיךָ הַדָּבָּר מְאֹד בְפִּיךָ וּבִּלְבָּבְךָ לַעֲשתוֹ ל יב-יד Torah is not in the heavens, or on the other side of the sea; it is very close to you, in your own mouth and your heart, so that you can keep it. This is strange. Who is looking in Shamayim and: עֵּבֶּר לַיָּּם the other side of the sea? And how can you have it all in just: בְפִּיךָ וּבִּלְבָּבְךָ your mouth and your heart?
We can suggest that the “Torah” referred to in this Passuk actually means Bitachon, since: עִּ יקָּ ר נְ תִּ ינַ ת הַ תּוֹרָּ ה the main giving of the Torah is for Bitachon; which the Gr”a defines as being Sameach B'chelko. So now we can explain the Passuk as saying: Just be satisfied with your very self (בְפִּיךָ וּבִּלְבָּבְךָ) and that’s everything. עֵּינֵּי כְסִּיל בִּקְצֵּה אָּרֶּץ משלי כז יד A fool is always looking everywhere else, except being satisfied with himself. Notice how all these Pesukim in Parshas Nitzavim have the same theme: “Be happy with what you have”. פֶּן יֵּשׁ בָּכֶּם וג 'ואֲשֶּׁר לְבָּבוֹ פֹנֶּה הַיּוֹם מֵּעִּם ה' אֱלקֵּ ינוּ לָּלֶּכֶּת לַעֲבֹד אֶּת אֱלהֵּי הַגוֹיִּם הָּהֵּם כט יז Lest there be among you... whose heart is turning away from Hashem to go and worship the gods of these nations.
