Finding Pillars in your Existing Content
A little self-exploration can go a long way.
A few questions to ask yourself as you go through existing content:
What core topics are vital to my business?
What topics does my audience have questions about?
Where can I provide unique and in-depth expertise?
What keyword themes are we already ranking for?
Deciding what could be a pillar, and what is definitely not a pillar is often the first step. I usually suggest no more than 3-4 pillars.