This is true a few months back me and my husband took my elderly parents shopping and on the way back home we had take a detour because of road works, my parents don't walk very well and this particular day my lightheadedness was really bad , but i noticed that when i was taking my parents across the road to safety i didn't once experience the symptom because i was too concerned about the safety of my parents , it proved to me that my thoughts make symptoms worse .