The biology of emotional freedom depends on getting your endorphins flowing and turning off your stress hormones. How you achieve this? Laughter, exercise, meditation and doing anything that makes you loved.
All your failures and hopes, your suffering and striving, are inconsequential, compared with this. They are nothing. You are nothing. It was a relief to be nothing; it felt deep and beautiful and true.
The problem with thick skin is that it leaves you impervious to the sharpest of pins. Everything becomes dull. But without that sense of pain, there cannot be that sense of relief. Ultimately, the thickened skin leaves you numb, incapable of feeling the highs and lows of life. It leaves you rough like a rock and just as inanimate.
Perhaps love is a minor madness. And as with madness, it's unendurable alone. The one person who can relieve us is of course the sole person we cannot go to: the one we love. So instead we seek out allies, even among strangers and wives, fellow patients who, if they can't touch the edge of our particular sorrow, have felt something that cuts nearly as deep.