You do not panic because you understand what it can lead to, and you do it right, you always need to look at the long-term perspective 
Correct mate , the OP did not panic anymore because he/she already know what is the flow or how the market works . New ones are the one you cannot understand the market yet as we also experienced that situation before but later on they will know how to hold and never bother if bitcoin will fall because we know that falling down is normal and it will rise when the right comes.