Mistakes aren't fatal; they are merely the portals of discovery.

Separate out the creative act from the act of editing and execution. Make it a two-step process. First, let ideas flow and encourage EVERY idea to make it to the whiteboard. Don't criticize, judge, edit, budget, or worry. An idea on the wall can't hurt anyone, so let them rip without restriction. After any and all ideas have the opportunity to "come out to play", only then should you apply your analytical and logical side to the effort. Don't mix the creative process with the editing process or you'll kill your ideas before they even get a fighting chance.

Build creative cultures, and work with purpose to unleash the creativity of your team. Creativity is the most valuable natural resource in any organization, yet it is often a resource that is largely untapped. The leaders that prioritize and invest in creative cultures will be the wall street darlings of tomorrow. In fact, they're the darlings of today (Facebook, Groupon, LinkedIn, etc).

Fear is the single biggest blocker of creativity.

Today, nearly every competitive advantage of the past has been commoditized. Creativity is the one thing that can't be outsourced. The one thing that can separate a company, team, or individual from the competitive set. Today, precision execution is merely the ante to play. Sustained differentiation can only come from breakthrough creativity.

Mistakes aren't fatal; they are merely the portals of discovery.

Curiosity is a key building block. The more curious you are, the more creativity you will unleash. A great way to do that is to ask the three "magic questions" again and again... those questions are simply, "Why", "What if?", and "Why not?". Asking these questions constantly focused you on the possibilities and away from how things are at the moment.