Wise, but miserable-looking senior man encounter.
Overheard a woman comment to him, "nice day today."
In which, he replied, "Everyday you wake up, is a nice day." and looked at me.

Shortly after, I was starting up my car.
He walked up to the driver side window, so I opened it.
With a look of concern, he told me it was a sunny day so I didn't need my windshield wipers.
Puzzled, I told him I simply hit the wiper switch accidentally as I was starting the car and switched it off.
He smiled, and replied, "I was just giving you trouble to make you smile."

While I was eating dinner, there was a toddler girl in a high chair next to me, that kept turning her back to look at me, wave, say hi, and offer food to me.

Interesting being back in my hometown today and having the old and young, although strangers, cheer me up.
Recently, felt like I wasn't welcome even in my hometown anymore such as when I almost got hit by a car while crossing the street I used to live at. (Great place to be killed.)

Lastly, but not least, reminding me of the cat that got run over by a car before my very eyes and writhing as its life withered away, when I was driving home, I saw the same black cat I saw before (in the dark, I told it to look at me, in which it did, but its eyes didn't glow in the dark) about to cross the street, then start backing up and stared at my headlights, this time with its eyes reflecting back the light.
Best to stay away from me, kitty. I only reek of smoke and death now... (Car accident which resulted in a total loss, second one acquired now)

(Not meant as a religious, philosophical, or legal discussion.)
Do you know anyone who has "fallen out of grace?"
It's rare to see things in terms of "black and white" without shades of gray, but the black is pretty clear this time.
The negative impact on personal life was already tolerated, but even the potential of impacting professional life as well, is where the line is drawn.
I see this as more of a threat now, than simply a nuisance.
However, it's not too late for this person, x, to redeem itself.
But if this continues or worsens, then I won't hesitate to point my blade even at an old friend.
I regard these types of persons as more of a threat or danger than a person who was purely your enemy the whole time.
"No mercy even for friends, especially the traitorous ones."

As for me personally, I feel that I've already fallen to the bottom, so there's only one way to go now. Karma works in interesting ways and I think it's finally about my time now.
I think in life, there are two phases: destruction and rebirth, and I've already had plenty enough of the first one...