Use 'negative capability' - the ability to shut off your own programming and simulate what it's like to be another human being until you start having the emotions they're having

Dr. Ned Hallowell told Eben this is what poet Keats called 'negative capability'—you keep doing the exercise until you feel 'Oh wow, that's what it feels like to be them' and only create marketing from that emotional state. This is customer empathy taken to its deepest possible level.