I have this thing when I walk.
I look down as I walk.
I look down, watch the ground, don't look up. I have done this for as long as I can remember. I have memories of walking around my junior high school, looking down, looking up briefly and seeing so many faces, and immediately looking back down.
My usual focus is around 3 meters in front of me, not at my feet. This is mostly when I walk by myself. If I'm holding my cutie's hand, then I look up as a walk (for the most part, not always, though).
While my looking-down walking technique is sometimes fruitful (I believe I have found more money on the ground than any of my friends, mostly because that's where I'm looking), it isn't where I want to be looking.