Concept mapping is a great tool for helping you:
The video below demonstrates how to use concept mapping to brainstorm ideas and find a narrower focus for the starting topic of climate change.
Apply the concept of concept mapping to your starting topic!
Skim Reference, or Subject Encyclopedia, articles to gather keywords, concepts, terminology of the field, and ways to focus a big topic.
The excerpt below shows an article on Work Life Balance. Skimming through this article, I begin to learn what the topic is about. In addition, I find some useful terminology for future searches and I also see that I could focus on family needs in work-life balance. Click on image to enlarge.