I’ve been having similar things but with feeling “awful” instead of feeling fear.
Essentially it’s feeling exhausted , over stressed , tired from work, tired from socializing , etc… normally I would have the thought “wow I feel like absolute shit”, I would withdraw and genuinely feel very bad, until eventually it wears off and I feel neutral.
But now it’s like I simply can’t fully take it seriously anymore … so there is still the feeling very bad, in a sense - the exhaustion and tiredness and I am sure the affective part is still there too - but because there is this underlying purity where nothing can go wrong, I just can’t take it seriously … it’s like I can’t “truly feel bad” even though there is the feeling of feeling bad. It doesn’t “get to me” even though I am aware it is ‘me’ (it is my emotion, not anyone else’s and not a weird physical-only phenomenon).
I also noticed in the past I would have a resistance to feeling so bad. Like I would be wallowing in it but also bewailing it and also holding back cause it was so bad. But now there is no wallowing and no resistance, just feeling it and seeing it’s ok. Actually I noticed a bit of resistance and I was like ok, I challenge myself to feel this as fully as possible. There was a hint that if I felt it more it would Be “too much”… but when I allowed it to happen as much as possible, there was no such thing. Pure intent prevented anything bad from happening and I saw it was ok.
So now that the fear edge of feeling too bad is diminished, and I saw feeling it fully is not bad, its somehow easier to see that it’s just silly to feel bad. It’s a choice, a way to experience being alive, and simply put, there are better choices available.