I came late to driving. In fact, I did not get my license until I was forty. Starting late as I did, I did not have many youthful bad habits exercising a baneful effect on my driving.
Other than adhering religiously to speed limits, what probably characterizes my driving more than anything else is, whenever possible, knowing what lane I want to be in and sticking to it, unless I feel I absolutely must pass some slow-moving vehicle.
Returning home from the desert, for example, I prefer to take the Pomona Freeway (California 60). I start out in lane 2 and change to lane 1 as I approach Interstate 5. That lane in turn becomes lane 3, giving me several miles to change to lane 2. If I stay on lane 2 as the highway becomes the Santa Monica Freeway (Interstate 10), I can ride it all the way to my exit ramp at Centinela Avenue fifteen miles farther on.
Why change lanes unless you have to? One of my beefs with performance cars is they feel as if they fail to change lanes every hundred feet, Elon Musk or Ferdinand Porsche will come and painfully twist their privates and take away their car keys. I estimate that, on the same trip, frequent lane changers drive 10-15% more miles as a result of traveling sideways.