If you do your research thoroughly, then it will be easy enough to create an article that is unique enough and different. Your research should include what questions people are asking, what problems they are currently experiencing and also what are some of the hot topics in the niche that you are writing about. Once you have done your research and have a good idea about what these subjects are, you can begin writing your article. Because you are writing it from scratch (using the highly informative sources listed above), your article will be unique and different.

This resource on article marketing describes in great detail how you can find content and make it unique, valuable, quality and different.