Actually driving cars. As I said some time ago, I got my driving license recently. I don't know why but I absolutely love driving. I guess I have like cars since I was a small little brat.
I recommend you to just go out and drive. No destination, you don't have to drive far from your home, even around in a city can be relaxing, CAN be relaxing, can't guarantee. Just turn off the radio, relax, and drive. It's soothing you know. It really is.