There are thousands of problems in the world that it is almost impossible to miss an essay idea. The problems are social, financial, political, health, religious, etc. Despite having a wide field of topics to consider, choosing a topic becomes tricky. It should be understood that a topic is not only a collection of words. Some are a win while others are a total failure. How then do you select a winning topic?
There are common areas of study where by problems seem to be obvious. To produce a captivating paper, avoid such areas. You are unlikely to offer anything new to your readers. Find a unique area to focus on. The best topics are on emerging or mutating issues. You have an opportunity to offer a considered solution on emerging issues.
Some solutions appear to be obvious. This is not always the case. Some solutions cannot stand academic scrutiny. You need a deeper understanding of the issue to effectively offer a solution. The best solutions come from extensive reading. It also helps you to spot authors, books, institutions and authoritative persons who share ideas similar to yours. This boosts the credibility of your arguments.
The topic should be relevant to your discipline of study. If you are studying language, focus on problems in language. Law students should write on legal challenges. An environmental scientist should focus on problems related to the environment. A reader picking your paper will therefore have legitimate expectations.