Many brainstorming sessions fail because they exist without any structure. The hardest part of a brainstorming session is not generating lots of ideas, but rather focusing in on ideas that are novel, relevant and actionable. While original thinking is often spurred by escaping the bounds of our traditional line of thinking, the proverbial 'box,' we must grasp some restraints to ground idea generation. In some ways, we must still adhere to a box, but one that we construct ourselves.Here are some tips on building the right 'box' for an effective brainstorming session.

1. Don't brainstorm as a committee.

Keep the brainstorming groups small (ideally four people or less). For larger groups, try to break them into smaller brainstorming pods.

2. Seek Diversity.

Gather people from different backgrounds, experiences, and interests.  The best ideas happen when unique opinions, on an equal playing ground, are allowed to 'spar' a bit.

3. Ask the right questions to build context, a brief, and core values.

The group should all be on board before venturing into the unknown. Sometimes, certain questions that "frame" the discussion are helpful. For example, an upscale, well designed, environmentally friendly hotel chain might ask, “if GOOD Magazine and Apple created a hotel, what would it look like?”

4. For multiple decisions, hold multiple brainstorming sessions with a specific goal stated for each one.

Cramming too many deliverables into a single brainstorming session is bound for mediocrity.

5. Leave the meeting with Action Steps.

Hold each person accountable for always moving the ball forward. Boxes aren't bad, as long as it's a box that your team has built on its own. And who's to say it is a box? Maybe you’ll go for something hexagonal? --