Ever been told you need to stop experimenting, pick one idea and focus on it? I get told this every week.

Mike Rubini is fascinating. He does the exact opposite. He doesn't want one big business, he wants (and has) lots of small profitable businesses.

His main priority is simple: earn enough to allow him to play jazz whenever he wants. To achieve this he has gone from running an agency to becoming serial solo founder who focuses on building and running profitable SaaS (software-as-a-service) products.

He currently has five profitable products active, and several more he's shut down or sold.

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