RebYidd23,
I don’t understand the relevance to “depression and anxiety would cancel each other out. But they don’t”. Depression and anxiety are not opposing feelings that there should be any cancelling out going on. On the other hand, Bitochon is the way of cancelling out anxiety, as the Mesilas Yeshorim says. So I don’t understand your argument. Also, I’m unclear whether your intention is to argue with the Mesilas Yeshorim or to suggest I’ve misinterpreted it.
As for the “dinosaur living in your head” comment, I honestly haven’t a clue what you mean by this? If it was in response to what I wrote, would you mind to elaborate.