Dave, I understand what you mean - personally I don't believe in luck good or bad, no walking under ladders and all that guff and not too sure about a 'force shaping events' but certainly circumstances can play a huge part. Some years ago (ok many year ago!) I was blatting home from work late at night on my LC when a deer jumped into the road in literally right in front of me, I ducked and turned away certain of an impact and looked around a split second later to see it bound off to my left rear. I had no chance to brake or take evasive action, if I had arrived a split second earlier the deer would have landed on me, the same split second later and it would have wiped me out as it made it's second jump.
Not sure what that says other than a reminder of your post, you can't cover everything
