Well as Bitcoiner I have my goals and my prospects, both short-term in the medium term and long-term, I have my points of sale and my points of purchase, I have perspectives on what can happen with the adoption, regulations and evolution of this technology, one has to think all its movements when involved in an investment of such risk as Bitcoin and other cryptocurrencies.
In my case, for example, I usually track my average price of BTC, if I get considerable profits according to my average price I can think about selling, just as if there are considerable decreases and I can buy a little to lower my average price is also a wise action.