There are lists of spiritual gifts - in Romans 12, in 1 Corinthians 12, in Ephesians 4, plus a few other isolated references in 1Cor 7 and 1Pet 4.
There is also a common distinction made between teaching, as in presenting new insights, and preaching, as in exhortation. Perhaps the gift I have in mind is just a subset of that latter.
I find as I am older that neither reading the scriptures, nor prayer, nor listening to others brings me anything new. But I think that's a feature, not a bug. If I haven't got the basics down at this point, I'm never going to. But what I need over and over, my daily bread in the spiritual realm, are reminders. I very quickly lose what I know in the heat of the battle - there are many holes in the bottom of my bucket and all the good stuff runs out pretty quickly.
The Gift of Reminding is one of the higher gifts we should aspire to.