I just listened to NPR and there was a talk session about the left brain and right brain. It got me thinking about which side of the brain i use dominantly, but from what this psychiatrist was saying i got the impression that I am both left AND right brained. Im creative and logical etc

Are people that use both sides of the brain brain damaged? And how can you even know which side of the brain you use? I have multiple mental illness and this question needs to be answered. Im going to talk about this with my psychiatrist in a few days.