Yes, I heard my friend saying it. As said, time decides everything. My friend said, when the price was less, he waited for the price to go up to exchange/sell the bitcoins he earned in this forum. A night made him miss a good profit to his bitcoins. The price was high at night and decreased in the morning. Time really matters. What if we have set the machine to auto sell when the price goes high and buy when the price goes low?