Witness Donald Trump's current presidential campaign. So first people need to find the white spaces, the unexploited or underexploited niches where there is less competition and more opportunity.

The individual attributes of warmth and competence are often perceived to be negatively correlated. That doesn't mean they actually are, but that's how people perceive the world. So, cruel people, those who gave negative book reviews, for instance, were seen as less likeable but as more intelligent.

Doris Kearns Goodwin's Team of Rivals is instructive in painting a realistic portrayal of Lincoln and his methods for accomplishing his objectives. In fact, many good political biographies are useful in learning about power, strategy, and decision-making.

Part of strategy is figuring out what you're good at, figuring out what you're not good at, and then getting yourself in position to succeed by doing mostly what you have a competitive advantage doing.

My overall recommendation: for decades corporate policy manuals and HR departments have told people they are responsible for their own careers. It's about time people really heeded those warnings.

One way to feel good about oneself is to not fail. The easiest way to not fail is to not try in the first place. So, I see lots of people give up before they start. That way they don't have to face uncomfortable failures. They can sort of "remain on the sideline while the game is going on." While this may make people feel good about themselves, it won't get them any power or success. As any successful salesperson will tell you, if you haven't been rejected, you haven't tried enough with enough people.

The single biggest barrier to effective leadership is, in my view, the leadership industry itself. Instead of telling people the skills and behaviors they need to be effective in getting things done, we tell them almost the opposite - blandishments about how we wish people would be, and how we wish workplaces were. That information is worse than useless as, to the extent people believe it, they often wind up losing their jobs.