Waterfall, my advice is, turn around and don't try don't see the price for a while. If it bounces back you'll have a bad day, but at least try to sleep well tonight. I don’t really know how much you’ve lost and I don’t care, probably most of us have been in the same position.
Honestly, I wish you the best of luck for future investment and try not to forget this day but learn to live with it.
Cheers!