And go get an education. Education needs not to be received in a classroom; one can learn by just thinking carefully and gather evidence meticulously, especially when we are living in the information age. Having a formal education is certainly helpful, but it is merely a guide that helps you to get to certain information faster; a guide is only as good as your ability in applying it to the right situation.
Evaluate your own arguments. Be critical not only on other things, but on yourself as well. Learn to be critical when you receive information, and apply the same process on yourself when you produce arguments.