I have yet to try the whole sell high, buy low thing.
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The few times I've run the numbers of timing it "perfectly" only equalled an extra coin or two. The risk of missing it seems too high, IMO, especially when my goals are to see this disruptive technology change how commerce is done.
Agreed, trying to catch the falling knife is more of a gambling game.
If you're more seriously into trading, a classical advice is to pick a simple strategy (the simpler the better) and to stick to this strategy as consistent as possible.
You might find
this thread from last year worth reading.
The author of this thread describes a simple strategy to follow the market, and explains why this can be profitable on average.