Common on both sides of addiction.
It reduces usually for those surrounding the addict.
Usually something traumatic will bring the addict around. Or further destruction.
The same might be said for mental/spiritual problems.
Someone might be slowly deteriorating, so slowly glitches are excused or passed over.
As it progresses, behavior and all else deteriorates, but those around might still ignore signs.
We want things to be right. We want health and all good things. We want normality.
If there is health, we strive for those things and find solutions.
If there is disorder, denial takes root.
We wish for everything to be ok to the point where catastrophe ensues with negligence.
It's very hard for some to face reality. And no amount of presenting facts sways them.
It takes perseverance for right to prevail. That entails showing, because just telling becomes rhetoric. Experience lights the way.
And, we must let go. We guide but for health to win, we must each come out of denial ourselves.
All I can do here is point out.
The rest is up to you.