This makes me wonder, where do you people learn how to trade? Do you just know from experience?
I do analyze the history and take my own conclusions, bitcoin has been reasonably predictable to me.
Historically if a bottom price repeats a few times it wil never go lower than that and will repeat a few more times, so you buy when it reaches such bottom and of course do not sell. There are transition times where the bottom will increase, it is not predictable and is the period you can miss opportunities.