Start With Why, Simon Sinek

All organizations and careers function on 3 levels. What you do, How you do it and Why you do it. The problem is, most don’t even know that Why exists.
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As it turns out -- there's a pattern -- as it turns out, all the great and inspiring leaders and organizations in the world, whether it's Apple, or Martin Luther King or the Wright brothers, they all think, act and communicate the exact same way. And it's the complete opposite to everyone else. All I did was codify it. And it's probably the world's simplest idea. I call it the golden circle.

Why? How? What? This little idea explains why some organizations and some leaders are able to inspire where others aren't. Let me define the terms really quickly. Every single person, every single organization on the planet knows what they do, 100 percent. Some know how they do it, whether you call it your differentiated value proposition or your proprietary process or your USP. But very, very few people or organizations know why they do what they do. And by "why" I don't mean "to make a profit." That's a result. It's always a result. By "why" I mean: what's your purpose? What's your cause? What's your belief? Why does your organization exist? Why do you get out of bed in the morning? And why should anyone care? Well, as a result, the way we think, the way we act, the way we communicate is from the outside in. It's obvious. We go from the clearest thing to the fuzziest thing. But the inspired leaders and the inspired organizations, regardless of their size, regardless of their industry, all think, act and communicate from the inside out. 
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Here's how Apple actually communicates. "Everything we do, we believe in challenging the status quo. We believe in thinking differently. The way we challenge the status quo is by making our products beautifully designed, simple to use and user friendly. We just happen to make great computers. Want to buy one?"