The Exilarch ("Reish Galuta") of Babylonian Jewry, Huna Mori bar Mar Zutra, was executed in Pumpadita by order of the Persian emperor on the 18th of Tevet of the year 4229 from creation (469 of the common era). Also killed on that day was Rav Mesharshia bar Pekod (the third Jewish leader who was arrested with them, Rav Ameimar bar Mar Yenuka, was executed two months later).
The 18th of Tevet the yahrtzeit (anniversary of the passing) of Rabbi Zvi Elimelech Shapiro of Dynov (1783?-1841), author of the Chassidic work B'nei Yissachar.
Links: Read two stories about the Rabbi
Forty-Three Rubles
The Mystery of the Troubled Wool Merchant
Also, learn a teaching of the B'nei Yissachar
People have the wrong idea about restrictions: They imagine that if you restrict what you eat and what you do not, when you work and when you meditate and pray, what you wear, where you go—all these restrictions will suffocate any sense of inspiration.
The truth is, without any restrictions your inspiration will quickly dissipate. Focus your light like a laser into an intense, powerful beam, and it will last.