(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...

Sometimes I wonder how hypocritical I may be.

A brief conversation with a senior citizen made me realize it yet again.
I was thinking about how if she died, in my own mentality, even if she does not have much life remaining, even if the lost of her life would be of little significance to her, I thought about how her death may impact her friends, family, whatever social relations she may have accumulated over the years.
I then realized how contradictory and hypocritical I was yet again, because I have thought this many times over the course of my life, but I tend to think along the lines of:

"I haven't accumulated much significant social relations with other persons. If I die now, especially sooner rather than later and thus having more chances and time to accumulate such relations, it would be of no lost whatsoever to anybody or anything. Be best to limit casualties with damage control."

Similarly, if I survive long enough to attain advanced age (surely without much advanced wisdom or special relations), I have nothing to lose with nothing left in front of what little future I have lingering.

Yet, I think otherwise for another person. I give them the benefit of the doubt, while belittling myself.

Change?

- Time flows, I guess everything changes?

Words on life: It goes on...

I'll extend it beyond three (3) words: Life goes on, until it ends.