As you see, the Bitcoin is crashing and trying to break a new low until it stop.
But I won't sell any Bitcoin at this time, I believe it will rise again as it always do.

i think it is smart to don't sell them now when price is not so large, it is only 450$ and there will be halving in July this year so price will rise even more, maybe to 1000$
and everyone shouldn't sell their coins when price is small because if they will, they will lose money they could get by selling them later, so it would be really bad idea to sell them now