For the past dew days I feel light headedness especially when walking or driving, during movement. This creates anxiety. Reason & cure?

Light Headed. I'd suggest having your physician check you.
Many possibilities. A sensation of light headedness can have a number of reasons from simple benign vertigo, abnormal glucose metabolism (diabetes), anemia, dehydration, to cardiac arrythmia. New antihypertensive medications can also cause. It would be best to have your doctor evaluate you soon.