Having wisdom and sharing wisdom is sometimes different from having to apply it to your own life.
We may have helped others but, in our own time of crisis, discover that our words to them are inadequate to our own suffering.
In fact, all words are inadequate. they may be good words, but they do not sink in. If we were to replay our own speeches, they would be resisted. It may be good advice, but we are not ready to receive it.
The book of Job has some pretty good insights for both the care giver and the care receiver - how we give and how we receive help.
"Behold, you have instructed many,
and you have strengthened the weak hands.
Your words have upheld him who was stumbling,
and you have made firm the feeble knees.
But now it has come to you, and you are impatient;
it touches you, and you are dismayed.
Is not your fear of God your confidence,
and the integrity of your ways your hope?"
(Job 4:3-6 ESV)