So I think everything. Just what will you do if bitcoin starts with the same speed or even faster to fall down? You must understand what ever the price may increase and someday it will happen. It seems to me that it is too early to speak about bitcoin as a reliable investment.
take advantage of every moment in bitcoin, and take good care of it
every rise and fall of bitcoin price if we can take the right moment then you will gain profit, do not panic if see price drops drastically because this is only a matter of time all will return as before