It has happened to the best of us. Trying to find meaning in your life. There have been entire philosophies devoted to this – it is called existentialism and it emphasizes individual existence, freedom and choice.
It is the view that humans define their own meaning in life, and try to make rational decisions despite existing in an irrational universe. It focuses on the question of human existence, and the feeling that there is no purpose or explanation at the core of existence.
But maybe the truth is that we think too much. Perhaps we should embrace our very existence, our being, our life, and live it to the fullest, experiencing emotions to their full depth and enjoying every minute of our so valuable lives.