Don Norman again:
What is design thinking? It means stepping back from the immediate issue and taking a broader look. It requires systems thinking: realizing that any problem is part of larger whole, and that the solution is likely to require understanding the entire system. It requires deep immersion into the topic, often involving observation and analysis. Tests and frequent revisions can be components of the process. Sometimes this is done in groups: multidisciplinary teams who bring different forms of expertise to the problem. Perhaps the most important point is to move away from the problem description and take a new, broader approach.