First, understand the challenge, business, people and the context. Collect your assumptions and what you need to learn. Do your desk research.
Have your wall where you put your challenges, ideas and artifacts you collect. Cultivate your working space to inspire your body and mind.
The more differentiated people and disciplines the better. You will work together from the beginning to the end.
What does the challenge mean to you?
Who seems to have this problem?
What topics might tackle the solution?
What do you already know and what are your assumptions about the challenge?
What more do you need to learn?
Use Post-it notes to organize your thoughts.
Include specific people and specific topics selected from the previous step in the newly stated challenge.