Start with Why: How Great Leaders Inspire Everyone to Take Action by Simon Sinek

Simon Sinek's core idea is deceptively simple: people do not buy what you do. They buy why you do it. Start with purpose, not product.

He calls it the Golden Circle. Why at the center. How in the middle. What on the outside. Most companies communicate from the outside in. The great ones start from the inside out.

What resonated

The Apple example is the one everyone remembers, and for good reason. Apple does not lead with specs. They lead with a belief -- that technology should be beautiful, simple, and human. The products follow the belief, not the other way around.

I have applied this to how I think about engineering teams. The best teams I have been part of had a clear "why." Not "we build features" but "we make this process painless for users." That clarity shapes every technical decision downstream.

Sinek also connects "why" to hiring. When you hire for skills, you get employees. When you hire for belief alignment, you get missionaries. I have seen this distinction firsthand. Missionaries push through hard problems. Employees clock out when it gets tough.

Where I disagree

The book could be a TED talk. In fact, it was -- and the talk is better than the book. Sinek takes one powerful idea and stretches it across too many pages. The examples get repetitive. The Wright Brothers. MLK. Apple. Over and over.

He also treats "why" as almost mystical. In reality, most successful companies started by solving a concrete problem, not by having a grand purpose. The "why" often gets articulated after the fact. Sinek presents it as the starting point, but it is often the result of iteration and learning.

Who should read this

Anyone in a leadership position who struggles to articulate what their team or company stands for. Founders. Product leaders. Watch the TED talk first. If it resonates, read the book for the deeper examples. If not, you have saved yourself several hours.