The doctrine of the Baal Shem Tov is that everything encountered by a Jew should provide a lesson in his service to G‑d. Even something seen or heard previously must provide a fresh lesson, for since by Divine Providence a person has encountered it again, it is not a coincidence, but must provide a loftier lesson. G‑d did not create anything in His world for naught, and since G‑d has shown him something yet another time, it is for a purpose — to learn a new lesson in service to G‑d. And if a person does not utilize this opportunity, he is wreaking havoc on the concept of creation.
A simple example of the above is found in a person’s daily service to G‑d: When a Jew wakes up in the morning, he must know that G‑d Himself is watching him to see how he wakes up and how he will conduct himself afterwards. Thus, when a Jew says he wants to see a miracle, we tell him: Fool! There is no greater miracle than when G‑d Himself, in all His glory, is in your room watching your conduct! G‑d created all the worlds, and when a Jew realizes that G‑d has left all these different worlds, and, as if to speak, has nothing to do but to watch how a Jew conducts himself, he realizes this is the greatest “miracle”! And although this repeats itself every day, the greatness of it is emphasized every time.
chabad.org
Once the holy brothers Rebbe Elimelech and Rebbe Zusha overheard a conversation between a drunk peasant farmer and his wife. She yelled at him, "It is harvest time, how can you sleep?" It happened to be the month of Elul, the time of repentance and awakening before Rosh HaShanah and Yom Kippur, and the holy brother had the same thought: "This is a sign that these are days of awakening. Now is a time to work on oneself in the service of GD. How then can we sleep?"
MiPeninei Naom Elimelech
