While you are panicking over the decline in the price of bitcoin, the largest bitcoin holders will have an even more volume of bitcoins because of the panickers
A lot of people panicked but not me. First of all what are you trying to analyze? What range of time are you considering? If you checked the performance of the last quarter of 2017 before it went upward by December, it is still much lower to the prices we have right now. And yet in span of months we gained a lot. Treat a low price as an opportunity to invest more. To cash out on the other hand will just make your loss gets realized.