Choose a subject that you are passionate about. A keen interest will help ensure that your research is thorough and will prevent you from becoming bored.
Find an angle that hasn't been explored. Discussions with your adviser will help you identify which aspects of the subject have not yet been covered. Do preliminary research to find out if there will be sufficient information available to examine your topic in detail.
For example, you may be studying social media and would like to research the use of it in the business world. Identifying the broad subject "the use of social media in business" is a good start, but you will need to be more specific than that. Ask yourself, "how is social media used in business?" Your answers might include its use in marketing, publicity or obtaining feedback on products and services. Another question could be, "what companies have used social media in business?" Answers might include online publications, event management companies or vehicle manufacturers. By making a selection from each of your answers, you may come up with combinations like "Facebook marketing done by event companies," or "using Twitter to improve publicity for Ford Motor Company."
Test the title of your thesis in discussion with your adviser so that you can focus your topic. An example of a focused topic pertaining to the use of social media in business might be: "How Twitter was used by Ford Motor Company in 2010 to obtain feedback on the performance of the F150." This will provide a clear, detailed topic for your thesis that will contribute to the body of knowledge used by businesses that are looking for new ways to engage their customers through the use of social media.
Reviewing examples of topics that have been used by other students may help give you ideas. Princeton University's class of 2005 senior thesis topics included: "Buying and Selling Movies: An Analysis of the Hollywood Stock Exchange." For a business student with an interest in films, this could be exciting. Harvard University's Thesis Database for 2006 lists under the English category: "The Importance of Silence in Shakespeare's 'The Tempest.'" For those studying non-profit organizations, the topic "Incorporating Uncertainty in Nonprofit Budgeting" might be interesting.