The Mental Mistake That Can Sabotage Tough Runs, According to Sports Psychology

​Running through discomfort is part of the sport. But according to sports psychologist Mike Gross, PsyD, LPC, CMPC, the real challenge during hard runs may not be the pain itself but the way runners think about it.

​Gross explains that psychological research on pain consistently shows one key idea: suffering is shaped less by the physical sensation and more by how the mind reacts to it.

For runners pushing through difficult workouts or races, that reaction can quietly undermine performance.

​Gross illustrates the concept with a well-known Buddhist parable of “two arrows.” The first arrow represents the initial pain or fatigue a runner experiences during effort. That discomfort is inevitable in endurance sports.

The second arrow, however, is the mental story that follows.

​Thoughts like “I’m fading,” “I’m not fit enough,” or “everyone else handles this better than me” can quickly spiral into doubt and anxiety. According to Gross, this second arrow is what turns ordinary physical strain into real suffering.

​Instead of fighting pain or forcing positivity, Gross recommends a mental skill called “curious awareness.”

​Runners are encouraged to observe discomfort objectively by noticing where it appears in the body, how it feels, and whether it changes over time.

​When separating the raw physical sensation from the mental commentary around it, runners can prevent negative thought loops from taking control during difficult efforts.