Once you've chosen a topic and done some initial background research, you will want to write your thesis which clearly states your point, and the argument you will be making for the rest of your paper.
According to the OWL at Purdue, a thesis:
Understanding your argument will make the next steps of the process (outlining and research) much easier to organize and manage as it will help give you a clear idea of the path you want to take in your essay.
In addition to visiting the CSM Writing Center to get one-on-one help developing your thesis, these resources can help you develop your thesis statement: