Professional traders don't get panic at any time.They do just two or three trades a month and earn more profits than newbies who do atleast thirty trades within a month.They follow each and every movement of the market and judge correctly when the price would rise and fall and decide according to it.They don't even pay attention to FUD and don't follow the market blindly.They do their own analysis.You could even follow the rule given by warren buffet,"Buy when every one is selling in panic and sell when every one is buying".
That is right. Professional stay calm under all sorts of situations because they have this fact in their minds those things won't remain the same forever.
But in order to become professional, we need to be a noob first, we need to make mistakes and learn from them. There will be hardly someone around here who has not panic or faced no loss.