Peter - I admire your phenomenal fortitude, and your ability to find and focus on the light in the darkest of circumstances. You are an inspiration, a true hero.
I had visions of impressive rocks 'out there' but, with little time, I had to use what I could find at hand - an heirloom stone (it came from my Mum and Dad's garden) placed in the dappled light on my front verandah tiles.
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Select rock, select inverse, cut pixels, flatten
Duplicate layer, stroke border reduced opacity,
Canvas size border,flatten
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Sharpen, image size x 2, sfw.
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There's a mixed message here - a rock is known for being solid, and 'forever' - while your message speaks of light and shadow. (which does in fact appear in the image).
Not a bad go at it, and I'm sure Peter would be happy.