A Thought From The Lubavitcher Rebbe

There is only the One Above, and you below. As for this universe you inhabit, it is nothing more than a means by which the two of you will connect. Whatever enters your universe today will be precisely what you need to connect. Perhaps by doing a mitzvah. Perhaps by overcoming a challenge. Or perhaps by extracting from it some spark of divine wisdom. You don’t need to understand the purpose. You just need to know that G-d does not dump useless junk in your world.

As for the other guy, he is the centre of his universe. And when you enter his universe, you must know that you are only there to assist him in his life’s mission to connect above and below.

Reshimot, 44