To be rugged is to be tough, determined, and durable. To be flexible is to consciously respond to altered circumstance or conditions, to adapt and bend easily without breaking. Put those together and the result is a gritty endurance, an anti-fragility that not only withstands change, but thrives in its midst. This is rugged flexibility, the quality you need to become a master of change, to successfully navigate disorder and chaos and endure over the long haul.
Source: Brad Stulberg; Master of Change (2023).