Another key to boosting your concentration is de-cluttering your environment. A Princeton University study found that, “Multiple stimuli present in the visual field at the same time compete for neural representation by mutually suppressing their evoked activity throughout the visual cortex, providing a neural correlate for the limited processing capacity of the visual system.”4 In layperson’s terms, what this means is that physical clutter in your surroundings competes for your attention, which results in decreased performance and increased anxiety and stress levels.