have you ever wake up, thinking if you're still alive?

this thought have always been on my mind; especially more frequent ever since i start riding a bike. there's always something at the back of my mind asking if the 'me' standing right now is actually 'me' instead of some flashback or weird memories. will there ever be a day which i think i'm alive and yet when i open up the papers, i see myself on it together with some traffic accident related caption or sudden death.