Buy it when it's price is low and you can afford to buy it then Hold it to rise again then sell, easy profit.
I think it’s better to hold your bitcoin because it will help you to gain more income and money. In addition to that, as of now the price of bitcoin is not yet high and if you can afford to buy I think buy more bitcoin and hold it for a long time because there is a possibility that the price of bitcoin will rapidly increase in the near future.