The internet rewards two extremes: huge personalities and quiet specialists. Most "personal brand" advice optimizes for the first. This is for the second.
Pick a slice, not a category
"Marketing" is a category. "Lifecycle email for B2B SaaS at the 50-customer stage" is a slice. Slices win because:
- A specific reader knows the post is for them
- You can become the default name in a tiny room before competing in a big one
- Specific advice is more useful, more shareable, and harder to fake