Do you really know yourself?

I have just finished a course and trying to enjoy some spare time I have. I like to watch my sleeping 19 month old. It is so precious and I can never get tired of it. I was envious of the fact that how simple and impression free his life is. No emotional baggage to carry on. It made me wonder about my inner peace and if I'm truly happy. I'm not sure if it is very common, but I'm one person who enjoys the journey more than the destination. Once I reach where I want to, its like the reality doesn't match my expectations and now I have new set of goals to achieve and new mountains to climb. Phew! When you do not experience something yet, it is out there to be anything you want it to be. But once you are there, it is reality. It cannot be changed. What is it that I'm searching for? Is it out there or is it only as good as a dream? Or is it me? The reality is always the same. No ifs and buts attached. Probably it is me changing. What am I changing for? What is it that I want to reach?