On the 13th of Tammuz of 1927, the sixth Lubavitcher Rebbe, Rabbi Yosef Yitzchak Schneersohn, received the documents authorizing his release from a sentence of exile to Kastroma in the interior of Russia. The Rebbe was actually notified of his release on Tammuz 12, but since that day was a legal holiday, the Certificate of Release freeing him to travel home was issued only the next day. Thus both the 12th and 13th of Tammuz are celebrated as a "festival of liberation" by the Chabad-Lubavitch community. (For more on the Rebbe's arrest and liberation, "Today in Jewish History" for yesterday, Tammuz 12).
Sometimes you look at yourself in the mirror and you feel unqualified. You know yourself, your failures and your faults, and you don't feel like you could be a model for others.
You say, "I should teach others? I should provide guidance?!"
So we tell you, “Yes. Because that is your place upon this planet: We live in a time when all those who know Alef must teach Alef and those who know what comes after Alef must teach that too.”
“And G‑d Above, who formed you and put you in the here and now, He knows who you are and how you are and what you are capable of accomplishing. If He believes in you, you must as well.”
Teach others and become great.