Dissertation writing is no fun to you? Most likely you are fond of the topic you chose or you were assigned. If you have a chance to choose the topic for your dissertation, it may change everything. Getting the topic you like to work on would give you strength and energy to do the work properly. Read the suggested topics and get inspired for your own topic.
Dissertation topics on Political science have a good range to choose from. Find out what topics are good for research and think about your own.
Dissertation topics on Business are quite different so you can choose any. Use the ideas to think about your topic or use the suggested for your research.