The way I see it:

The Simon's Sinek Golden Circle it's not exactly a novelty, it's been around for a while.

It's old, but it doesn't get old. 

It clearly explains that the way to do it it's inside out, not otherwise.
Start with the WHY, and the HOW and the WHAT will follow. 

Harder? Yes, but if you want to make a difference, be able to inspire others and live a meaningful life, this is most probably the way to go.

Compilation:

 

Every organization—and every person’s career—operates on three levels: what we do, how we do it, and why we do it. We all know what we do: the products we sell, the services we offer or the jobs we do. Some of us know how we do it: the things that we think make us different or stand out from the crowd. But very few of us can clearly articulate why we do what we do.

And here's the best part, this whole concept of WHY is grounded in the tenets of the biology of human decision making. How the Golden Circle works maps perfectly with how our brain works.

The outer section of the Golden Circle—the WHAT—corresponds to the outer section of the brain—the neocortex. This is the part of the brain responsible for rational and analytical thought. It helps us understand facts and figures, features and benefits. The neocortex is also responsible for language.

The middle two sections of the Golden Circle—the WHY and HOW—correspond to the middle section of the brain, the limbic system. This is the part of the brain responsible for all our behavior and decision making. It’s also responsible for all our feelings, like trust and loyalty. But unlike the neocortex, the limbic system has no capacity for language. This is where “gut feelings” come from. It’s not our stomach. It’s a feeling we get about a decision we have to make that we struggle to explain.

Source: