What am I here for?

After over 4 decades of life on earth, I am begining to ask myself what am I here for? Is this what life is all about? Surely, there’s got to be more to life than I have experienced! What am I really here for? Is there a purpose to my life? Do I have an assignment I am supposed to be fulfilling or what? Don’t get me wrong, I have had a good life so far, for which I am grateful to God for but deep down in me there’s a feeling of something missing or not quite right. What am I really here for?