i will hold bitcoin as long as the price is low and as long as the places i like don't accept bitcoin. mostly for the price rise in oeder to make a profit.
First of all, what did you consider a low price and high price? you need to set your goals in order to see a profit, but if you are into long term, then it is really better to save it, it will be safer if it is in your own wallet..
There is no exact definition for high price and low price in bitcoins, if you feel that this is a good price to sell then you should sell or if you find this price is affordable to buy, then you should buy it.