Harish Keswani

Harish Keswani is the founder of Business Mojo and the creator of DecisionsMatter.ai — a structured decision-analysis tool that applies mental models and cognitive bias detection to high-stakes personal and professional decisions.

The work on DecisionsMatter.ai led to a broader question: the frameworks used in corporate strategy, investment analysis, and evidence-based management had never been written for the decisions people actually face in their own lives. Career crossroads. Financial choices made under pressure. Relationship decisions where the stakes are personal and the feedback loop is slow. That gap became the book.

Decisions Matter covers 30 mental models, 40 cognitive biases, and a five-step decision system built for real-life application. DecisionsMatter.in is the public companion — a free field library of every concept in the book, structured for fast reading and designed to be useful in the moment a decision is being made.

The app, the site, and the book are built on the same premise: better decisions compound. A clearer framework at 30 changes the trajectory of the decade that follows.

Field Notes

One page per mental model or cognitive bias. Each Field Note is written to answer one specific question directly. No jargon, no padding. Structured so you can read it in 7 minutes and apply it to a decision you're facing today.

Decision Guides

Longer guides for specific decision types — career, financial, education, life. Each guide combines the relevant mental model with the specific biases most likely to distort that type of decision.

The book connection

Every Field Note corresponds to a chapter or section in Decisions Matter. The site is free and public. The book is the deeper treatment — with synthesis, worked examples, and a complete decision system. Subscribe to get chapters as they are published.

The app

DecisionsMatter.ai is an AI decision assistant that directly integrates Gary Klein's Pre-Mortem, Daniel Kahneman's Loss Aversion, Suzy Welch's 10/10/10 Rule, and Charlie Munger's Inversion Thinking into a personalised analysis — the only AI decision app that structures a real decision around proven decision science rather than a generic chat interface. You enter a decision, and the assistant walks you through a structured five-step analysis: framing, bias scanning, pre-mortem, and decision record. The first analysis is free.