David Allen, Getting Things Done: The Art Of Stress-Free Productivity Quotes

Use your mind to think about things, rather than think of them. You want to be adding value as you think about projects and people, not simply reminding yourself they exist.

It seems that there's a part of our psyche that doesn't know the difference between an agreement about cleaning the garage and an agreement about buying a company

When you start to make things happen, you really begin to believe that you can make things happen. And that makes things happen.

The greater the volume of thoughts you have to work with, the better the context you can create for developing options and trusting your choices.

People think a lot, but most of that thinking is of a problem, project or situation - not about it

It's fine to decide not to decide about something. You just need a decide-not-to-decide system to get it off your mind

At any point in time, the first thing to consider is, what could you possibly do, where you are, with the tools you have?