Brainstorming sessions are famously unproductive. How do you ensure success? There are four simple rules:

1. The first, and most important, is to remember that brainstorming sessions are structured events. They take effort to plan and execute properly. Define what you want to accomplish ahead of time, and communicate the goals in advance. It is very important that participants have time to mentally prepare—creativity benefits from incubation time.
2. Next, set specific session rules. These have to do with resolving conflicts and managing criticism, as well as making sure everyone participates.
3. Next, recruit for diversity. Without a range of experience, you get similar ideas and conclusions.
4. And last, assign a leader. This should be a person that the participants feel comfortable with and who is willing to adhere to the discipline.