Okay, so I realize this particular thread is over a year old now, but I came across the following article while doing research after one of my bouts with sub drop and found it to pretty relevant to the feelings I was dealing with. Thought maybe others may find it helpful ...

https://jenniferbene.com/2016/12/ask-me-anything-what-is-sub-drop/
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Fear, anxiety, arousal & pain; all are emotions & sensations. Feel them, experience them, surrender to them & learn to accept them.

~AynsToy