"And behold, seven ears of grain were sprouting on a single stalk -- healthy and good" (Bereshis 41:5). The Keli Yakar z"l explains that the good healthy grain, which represented the years of plenty, all grew on a single stalk. This represents unity. Similarly, the seven lean cows, symbolizing the years of famine, are referred to as acheiros (others). Each one distanced himself from his friend. Therefore, we see that the years of plenty are characterized by unity and the famine is fraught with separation.

This is not so difficult to understand. When people are unified, they can accomplish much more. Additionally, they get more Siyaya Dishmaya (Heavenly assistance) because Hashem loves unity and rewards those who humble themselves to get along with others. The opposite is also true. Working alone, you accomplish much less. And lack of unity and fighting is the source of much trouble with the Jewish people.

What do you want to be when you grow up? Whatever you do, you want to do it well. You want greatness in your field. How do you achieve that greatness? The Medrash Tanchuma on this week's parsha gives us the key.

"And Paroh said to Yosef, 'I dreamt a dream, but no one can interpret it' ... Yosef replied, 'That is beyond me. It is Hashem who will answer about Paroh's welfare'" (Bereshis 41:15-16). The Medrash states, "Hashem said, 'You do not want to elevate yourself? So be it that you will rise to greatness and royalty.'" Therefore, we see that one of the secrets of greatness is humility. One who does not ascribe his good qualities and accomplishments to himself, rather he gives the credit to Hashem, is destined for greatness. In a sense, he has already achieved greatness, because the realization that Hashem is the source of all good is a great accomplishment indeed.