
Karishma, a Senior Product Manager at Visa (formerly SAP), shared how she used Decode and Conquer to break out of a career built entirely around Travel & Expense products.
A few highlights from her post:
- Her routine: five pages a day, then one product problem a day, covering root-cause analysis, adoption, prioritization, and 0-to-1 and 1-to-N scaling.
- Her realization: her product thinking was shaped by one domain. The book pushed her to reason like a founder, a CEO, and a customer.
- Her takeaway: great PMs aren’t defined by their domain. They’re defined by their ability to understand problems, navigate ambiguity, and create value.
Here’s her original post:

Decode and Conquer is now in its 5th edition.