Ok I am probably too young to write on a topic like this but I am sure I won't dissapoint you.  I think that I have learnt pretty much everything from the analysis of the life and it's situations around me.  Life is like this revolving matrix with a mix of bright and blank spots. Brightness comes from the people around us, our own success stories and by being in perfect health. Blankness is due to failures, going away of loved ones and other unsolved problems.

But, whether it's blank spots or bright spots, both are just a perception of mind. If we try to look for emptiness within happiness and vice versa, we will always find it. But if we stop looking for both and just do our work, there will come a time when everything will be neutral for us. Our mind and happiness will become independent of the external world around us. We will be satisfied, peaceful and happy inside. This is true happiness, one which does not fade away in any circumstance.
 
When we do our work like it's our duty, there is no expectation of result and no fear of failure. We reach the highest state of consciousness, our existence decoupled with the material nature of this world. We become more human and humble and our mind free to look for the reason of our existence.