Sometimes, it's just good to get back to basics. Revisit what got us here.

NN/g (Nielsen Norman Group) did just that recently with a nice summary of what design thinking is (and means) with their Design Thinking 101 article.

Sarah Gibbons writes: "Design thinking is an ideology supported by an accompanying process. A complete definition requires an understanding of both." I also like how they call out the need for more "design doing" -- not only as part of the implementation step, but in general.

Not to mention that their infographic elegantly captures the process well...

The piece is definitely worth a read. 

Marc