I'm 99% sure that I've seen someone write what I found to be a very beautiful and very sad pshat relating to Yirmiyahu 23:9. It's not any of the mefarshim Sefaria has on that pasuk. I thought it was the Malbim, but the Malbim on that pasuk doesn't say anything like that. I searched on Bar Ilan and didn't find it in the Malbim anywhere in Tanach.
The gist was that a Navi only receives nevu'ah when he's happy. Yirmiyahu's prophecies were predominantly sad, so when he would feel one coming, he would get sad: "oh no, more bad news". Hashem would make him artificially happy, similar to the effect of alcohol (הייתי כאיש שכור וכגבר עברו יין), until the prophecy was over.
I'm not creative enough to invent a pshat like this on my own, so I must have seen or heard it somewhere, but I have no idea where. Can anyone help me find it?