Choose your niche — narrow beats broad
The biggest mistake new newsletter writers make is being too broad. "Marketing newsletter" competes with hundreds of established players. "B2B SaaS growth tactics for founding teams" is specific enough to own.
Your niche should sit at the intersection of three things: - What you know deeply — expertise you've built through work, projects, or obsessive interest - What people want to read — problems they want solved, questions they're googling - What you can sustain — a topic you'll still be excited about 50 issues from now
The sweet spot is usually a specific audience within a broad niche. Not "finance" — "personal finance for freelancers." Not "parenting" — "parenting after 40."
One useful test: could you write 50 issues without repeating yourself? If yes, your niche has enough depth. If no, narrow it further.