Rashi cites the Sages who say that Yaakov wanted to live in peace and serenity. But this was not to be, and the troubles of his son Yosef began. The Almighty said, “Is it not sufficient for the righteous that they receive their reward in the world to come? Why do they need to live in serenity in this world?”
The question arises: why is it wrong to want to live in serenity? Yakov desired serenity not so that he could devote his time to personal pleasure, but rather to be able to engage in spiritual pursuits.
Rabbi Yeruchem Levovitz explained that the purpose of this world is for a person to elevate himself by passing the numerous tests that come to him. The goal is spiritual growth from every life situation. Therefore, it was considered improper for Yaakov to place his focus on serenity.
This, said Rav Yeruchem, is an attitude we should all internalize. Every occurrence in this world can make you a better person. When you have this awareness your attitude towards everything that happens to you in life will be very positive. Before, during, and after every incident that occurs reflect on your behaviour and reactions. Ask yourself, “What type of person am I after this happened? How did I do on this test? Did I pass it in an elevated manner? (Daas Torah: Breishit, page 222-3)
Extracts from "Growth through Torah" by Rabbi Zelig Pliskin