When it comes to making a good picture of the everyday real world, being in the right place at the right time is usually part of the picture making equation. A picture maker can be in the right place simply by happenstance / luck or as the result of careful planning and preparation.
FYI, the time honored expression for being in the right place at the right time, picture making wise, is the adage, f/8 and be there. However, iMo, there is a very important additional ingredient to the "being there" part ... that is, seeing. If you ain't looking at the real world with eyes and mind wide open, you'll never know when you're there.
In my experience and way of thinking, there (picture making wise) is a visual state of mind. That is to suggest that one must see, not just look, and grasp the picture making possibilities.