Strategic Logic by J. Carlos Jarillo

What it is about:

A description "from first principles", without any buzzwords of what makes companies competitive in the long term and how to diagnose markets in terms of their competitive intensity. Professor Jarillo makes it clear how to tie pricing, competitive barriers and positioning to hard metrics of long term profitability, cost to enter a market and other strategic decisions.

Why it changed my thinking:

It demystified the world of "Strategic Thinking" for me, giving me a very well structured framework for how to think of market positioning, competitive strategy, pricing and product launches.

Where to get it:

(Note, if you buy from the links here, I get a little commission back)