When writing, it's much easier to respond to a question than a title.
For example, let's imagine you were writing an essay on social media. Would you find it easier to write 200 words in response to...
Title: "Facebook and Snapchat",OR
Question: "What are the main differences between Facebook and Snapchat?"
Questions force your brain into response mode - it's hard not to respond to a question someone asks you.
The better you get at phrasing your questions, the easier you'll find it to write.
Load the Speed Writer
You are about to speed write a block of text. Make sure you've divided up your project into blocks of 150 words. You will actually write 200 words here, but edit back down to 150.