I'll separate this next thought from the previous because I think you can take the previous suggestion will still work good in your life without taking the next suggestion, although they work best in combination.
Take some time to look at nature and your body. Ask yourself if it takes more faith to believe that it all happened by chance or to believe that there is a God that designed it all and created it. I'm not going to try to say anything else to try to convince since I know the HN crowd and I know no amount of debate will accomplish anything.
I hear in you a hungry heart for something to meet the deepest desire of your heart. I believe we were created by God and for Him and until we find Him we will never be satisfied. Being the owner of Google, Facebook, or anything does not satisfy that need. Having a wonderful wife and great kids doesn't. Having a challenging and interesting job won't do it. Money definitely won't -- look at the depravity you see in some of the world's richest people.
You ask "Where should I turn?". My answer: if what I have said rings true at all in your heart, turn to Jesus. Start by reading the Gospel of John in the Bible. Turn to your Creator to find the answers as to why you were created. He is real, and He is very interested in meeting the deepest desires of your heart.
And whether you take my advice or not, I truly hope you find answers to your questions.