Protect the skin with clothing, including a hat, shirt and UV protective sunglasses.
Spend time in the shade between 11am and 3pm when its sunny.
Use a sunscreen of at least SPF 30 which also has high UVA protection (SPF 50 for children or people with pale skin).
It is highly recommended that you tell your doctor about any changes to a mole. If your GP is concerned about your skin, make sure you see Dermatologist.