Thinking Principles

Inversion

Instead of thinking of what to do, think about what you shouldn't, and this will make clear what you should do, or at least what you really shouldn't. It is easier to not be a fool than a genius

Second-Principle Thinking

Think about the consequences of something, then think about the consequences of the consequences. Essentially thinking multiple steps ahead

First Principles

Break things down into the very core, and try to think around them.