Answer:
Survey Your Readers and Insiders in Your Niche
Explanation:
If you subscribe to my newsletter, at a point you’ll be asked to take a survey asking about you and how I can make the Writers in Charge experience better for you; I’ve gotten hundreds of responses to this survey, and I read (and re-read) and pay careful attention to every response.
The result of surveying my readers and paying attention to their responses has been countless of ideas on what to write about.
