If Bitcoin Has Bottomed (2015):
If we assume that Bitcoin has bottomed, this would mean that we are in the 2015 part of the last market cycle following the candle marked "2" on the chart. This means that we have five more months to buy Bitcoin at current prices so there is no reason at all to FOMO into the market. If you believe Bitcoin has bottomed, you can embrace this as an opportunity to accumulate for long term.
If Bitcoin Has Not Bottomed (2014):
If we assume that Bitcoin has not bottomed, this would mean that we are in the 2014 part of the last market cycle following the candle market "1" on the chart. This means that we have less than a month to get out of Bitcoin before it begins its next downtrend. In other words, there is every reason to be fearful and get out of the market. If you believe that Bitcoin has not yet bottomed and it is likely to fall further, this would be the best time to short sell, sell or at least refrain from buying.
Regardless of whether Bitcoin has bottomed or not, this is not a good time to buy. In case Bitcoin has bottomed, we have five more months to buy at current prices. If Bitcoin has not bottomed, this is our last chance to get out before it crashes again. In other words, from a risk/reward standpoint it makes every bit of sense to sell now and wait for confirmation. If Bitcoin does not fall further in the next 2-3 months, we can buy again assuming the bottom is in.