My name is Mia Oscar. The main aim of the opinion essay topics is to provide the readers with facts that hold merit and should be considered in the broader context. Your opinion should be convincing enough for others to consider it as valid and worth discussing. The following guidelines will help you write an effective opinion essay. The first step in writing an opinion essay is deciding what topic you will write about. You should choose a topic based on your knowledge and interest as it will make it much easier for you to write.