Being a youth is one thing, and being a good one is another. In the USA, a good youth should have these qualities(品质): First of all, health. A healthy body is the best riches. Without it, nothing can be done well. If you are poor in health, you will have to take medicine day after day. You can not even work, do sports and so on. Secondly, one must be of good quality. Always do something good for others. Help those in trouble and care about the people around you. If everyone did the same, what a wonderful world this would be! Thirdly, one must have the ability to work with others. Everyone needs friends because no one can live through life alone or do everything he wants to.
Besides the example above, patriotism(爱国心) is the one we should never forget. It means a love for one's country. It shows one of the highest qualities of human's. Everyone should love his own country. But people sometimes think that patriots(爱国者)must be fighters or that they live in a time of fighting for their country. That is wrong. A good youth's work is not only fighting. A good youth will do the things his country asks him to do.
I think a good youth of today should also have some training in art. If everyone can enjoy art and be able to make more of it for others, then people will live better and enjoy more.