This chapter generalizes problem-solving as a model of semiosis, focusing on the habitualization of sign action. Problem-solving is seen as a triadic, hierarchical process with three levels reflecting Peirce’s categories: Framing (Firstness/artifact qualities), Searching (Secondness/reactive constraints), and Habitualization (Thirdness/generalized solution). Peirce’s ten classes of signs model the intricate, interconnected constraints of problem solving processes. The habitualized solution is understood as a continuous product in process, emphasizing the dynamic self-organization of the overall system.