In a time when burn-out and depression are the order of the day, this is a very important question. The answer we can give is actually quite simple: our goal as human beings is to be happy.
The path to true happiness is found only in Jesus: he said of himself that he is the way (Jn. 14:6). If you wish to find ultimate happiness, it is therefore important to invest in your relationship with God. You will find that happiness, because God will help you to discover what you should do with your life.