2000 V6 Chevy Camaro

My car has 118,000 miles on it. I am the original owner. Yesterday, I needed to turn on my interior lights to find something in the car, and I realized that none of them were working! There are two light on the rear view mirror that have individual switches, and one dome light in the rear. What would make all three interior lights not work? Can I fix it myself?

Thanks!

Kristi