Sadness gives depth. Happiness gives height. Sadness gives roots. Happiness gives branches. Happiness is like a tree going into the sky, and sadness is like the roots going down into the womb of the earth. Both are needed, and the higher a tree goes, the deeper it goes, simultaneously. The bigger the tree, the bigger will be its roots. In fact, it is always in proportion. That's its balance.
Listen to your being. It is continuously giving you hints; it is a still, small voice. It does not shout at you, that is true. And if you are a little silent you will start feeling your way. Be the person you are. Never try to be another, and you will become mature. Maturity is accepting the responsibility of being oneself, whatsoever the cost. Risking all to be oneself, that's what maturity is all about.
One thing: you have to walk, and create the way by your walking; you will not find a ready-made path. It is not so cheap, to reach to the ultimate realization of truth. You will have to create the path by walking yourself; the path is not ready-made, lying there and waiting for you. It is just like the sky: the birds fly, but they don't leave any footprints. You cannot follow them; there are no footprints left behind.