Hold your head high is to face the society. You will find that all kinds of people in the society are more capable, richer, more prone to accidents and more talented than you. You will find that what you have is not there, and there are too few things that society needs. With your head down, you will see grass, flowing rivers, blue sky and white clouds, and towering trees. Natural life is sacred and beautiful. In front of them, you can only feel dispensable, but this is not negative.
Or hold your head high, and you will stand in front of everyone. When everyone is in front of you, you will find what you are missing. If you stand behind, someone will always rush to face you, and gradually you will become redundant.