Many posts discuss the possibility of exchange earnings with selling Bitcoin (and buy later). Other posts discuss the Bitcoin exchange rate, it seems that many agree there is a strong upward tendency and the volatility is hard to predict. It seems dat selling Bitcoin results in a serious probability of an opportunity loss. Selling Bitcoin can only be motivated by an (partial) exit. Do you agree?
I think at the current levels, if you want sure shot profit, do not sell before 6 months. The longer you hold, more will be your returns.
Most people have developed a system where they buy low and sell high and the whole continues again and again and they make profits with that system although it is not enough compared to what people who hold for a long period make.