Design thinking is a process for creative problem solving that focuses on human needs. It consists of 5 steps: 1) empathizing to understand user needs, 2) defining the core problem, 3) ideating potential solutions, 4) prototyping top ideas, and 5) testing prototypes with users to identify the best solution. The process is iterative, with insights from each step informing subsequent steps to refine solutions until the problem is solved in a human-centered way.