Zen master in Communicating through hollywood

I once incidentally saw a movie on HBO. (ohhh.... I love watching movies)-Charlie Wilson's war. Following is a dialogue in the last scene  of the movie


Gust Avrakotos: There's a little boy and on his 14th birthday he gets a horse... and everybody in the village says, "how wonderful. The boy got a horse" And the Zen master says, "we'll see." Two years later, the boy falls off the horse, breaks his leg, and everyone in the village says, "How terrible." And the Zen master says, "We'll see." Then, a war breaks out and all the young men have to go off and fight... except the boy can't cause his legs all messed up. and everybody in the village says, "How wonderful." 
Charlie Wilson: Now the Zen master says, "We'll see." 


Reference: http://www.imdb.com/title/tt0472062/quotes?qt0436729

Probably it may not sound so powerful while just reading it, however in the movie (based on US' covert support for Afghan rebels during Russian occupation) it is masterfully placed and conveys a very serious and thought provoking message.

Summary of the message was thus : You may think yourself to be doing good while in the end the result is f**ked up beyond recognition. Similarly you may be messing up and suddenly there is a heap of rewards in front of you.

I wouldn't go too much further in this post because probably zen master explains it the best.
Just  simple questions for you whenever something positive happens to you: What just happened was good? really? should i rejoice? or maybe should i not?

Probably this positive may lead to something not really positive or something real bad.

Similarly for every negative outcome: Is it bad? really? Should i be sad? or maybe not. This negative may lead to something positive which you might have not thought of before or considered possible.

In short be a little skeptic when good happens and little content when something bad happens. It is a natural course of life and what happens is how it is meant to be.