Diversify your investments and consider other mechanisms as well. Focusing into one investment instrument is a double-edged sword and it may depend upon your goal.
I would recommend purchasing bitcoins for long-term investment (cash them out if the prices are higher from its initial price you invested on), acquiring stocks (blue-chip companies or follow the price index), or by purchasing lands or properties. Before you buy, do extensive research and study in order to foresight your outcome.

Before you invest, consider that money as something that you are willing to lose but be responsible enough to determine when you should pull-them out.