Write what you know. (But what if all you know is the inside of your own brain?)

Write what you know. (But what if all you know is the inside of your own brain?)

They tell fiction authors to “write what you know.” The same obviously applies to non-fiction. But it’s all too easy to go from that to “Write about yourself” — especially when it comes to self-help books. If you know about marketing strategy, write about marketing strategy. If you know about startups, write about startups. Just…