I started to fear people driving towards me at intersections after I almost got T-boned. Weirdly enough after I was rear ended I didn't really get anything from that (maybe because I and my two passengers came so close to death/paralysis that first time).

Edit:

"Green doesn't mean go, it means you can go" from the advanced drivers course I took as a kid. It means make sure you check to make sure everyone else is stopping and not going to mutilate you when they run the red light.