This could not possibly be true. You have only just begun. The mere thimble full fo knowledge and experience that you have accumulated thus far is nothing compared to what lies ahead. But only you can make it happen. Make a decision. Take an action. The comments here are loaded with wonderful and practical advice. Louis Pasteur: "Chance favors the prepared mind".
Also consider this (this is a quote that I cannot give attribution for): "In youth we struggle with illusion of certainty. As we grow older we struggle with the certainty of illusion." We create the worlds that we live in. It is easier to follow a path that mimics and conforms to the structure of your environment. It is much more difficult to break away and define and follow your own journey. The feedback is not avaialble so you have to rely on your own internal compass. The choice is yours.