To install new electrical wires in something, or more figuratively, to change how your brain thinks about something through practice and repetition.
From 're-' (again) plus 'wire'; the prefix adds the meaning of 'do again or differently,' while the literal wiring sense comes from electricity and the figurative sense from neuroscience research showing the brain's neuroplasticity.
Neuroscientists proved that your brain can literally reorganize itself through repeated practice—they called it 'rewiring,' which is why psychologists now use this metaphor: your thoughts aren't stuck on old pathways; you can build new ones.
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