What do you do...

beat yourself over the head with a hammer twenty times then jump on your car and drive on the freeway doing 100 on the wrong lane, and drive the car over a cliff, always works for me!!!
 
I used to have a song stuck in my head especially when I am lightheaded. It can be coming to my mind which will make me voice it out and start to sing it, this will prompt me to start playing the song with my smartphone.
 
There are so many songs that are stuck in my head which I know 100% they are never leaving there. They are songs which I've loved so much from my childhood. They are part of me permanently.