Emotions run both ways, long and short
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Haha I've never seen this upside down! Nice one!
Best strategy to avoid emotional decisions is to buy and never look at it for a few years. If you're a buyer, there's a floor you can reach and we can consider that price 0$ is not possible.
If you're a short-seller then losing 100% of your investment is a possibility. Because of that you can't stay emotionally distanced and you'll probably follow the circle of the graph.