Coined by Dr. Dan Siegel, the window of tolerance is a metaphorical space that represents our nervous system's capacity to handle stress and stimuli. The window of tolerance is a range within which we can adapt to life's ups and downs without being overwhelmed or shutting down. The concept of the window of tolerance offers a practical framework for growing emotional resilience and navigating life's challenges. It empowers individuals to recognize their own states of arousal, understand triggers, and take action to return to balance.