A good rule of thumb is, if you are in dense complex traffic, to move your head around a bit when looking out and in the mirrors. Better coverage of dead angle in side mirrors, adding a bit more 3D into perspective.

Its sort of defensive driving - expect troubles, idiotic clueless drivers, people having heart attack or just turning head to yelling kid on backseat / nice lady walking nearby. Can't save it all but definitely helps.

Driving in country where people, when averaged, drive like crap is a good learning experience (albeit stressful). For me, whenever I enter France from Switzerland (on average 1x per week), its night and day and training (with cursing) resumes.