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.

haha, you were damn right! The price of Bitcoin has raised more than 15% since your post. It is $417 right now and Lets' hope it will be $450 again very soon (I mean it will take 2-3 days not more IMO).
Patience Pays, I don't think this is the right time to sell bitcoins, this is the right time to hold for the next few months and sell it at a right time, I believe this is still right time to buy few more bitcoins, as price is not that too high, it is predicted that the price of bitcoin will cross $500 mark so if we buy at the present price still we can enjoy some good profits in the future.
My neither it would be be stupid to do on this very nice moment. I think after the halving the bitcoin will rise to a high amount on the market.