I think the time to sell was when we hit the $5,800 levels. That was the best time to sell and just bought back when prices when back down to $5,500. That would have been a good profit. Though since it's really hard to predict these peaks and dips, no one could have perfectly timed both buys and sells when it happened. I guess it would have been possible if you watched close enough.
yes, there are many great opportunity missed for many peoples to earn great profit as bitcoins price is always changing so there where many times when its price was low and suddenly it increased. at this time there was a chance of getting high profit. but i is over now we should now start holding bitcoin and it is never to late to buy bitcoin so on can also hold bitcoins now as many peoples have predicted that bitcoin will reach $6000 in nest year so one should by and invest it bitcoin and hold it for some months the will surely get its return and the will not regrate it i think.
I personally like to hold bitcoin and sell them when there is a best price this give me a good amount of profit. so holding bitcoin is always profitable in every aspect.
For sure it is the best source to be the bitcoin user and the income of the monthly bitcoin is the high as compare to the other resources so buy more bitcoin and get into it, I hold the bitcoin and get the profit from it as long as it is begin the part of the life, bitcoin is increasing in the price and the bitcoin will be the one currency that will give you the high income in short time.