Panic is a kind of dangerous disease for a trader. If anyone has this disease he can't get profit by trading. So don't be the patient of this disease and take your time to decide where to invest and also research yourself. Don't invest anywhere before researching yourself.
I think we all have a certain threshold when it comes to panic in trading. For some among us that threshold might be really really high, so staying calm even when Bitcoin drops 80%. While for others that threshold is pretty low and they get shaky hands and sweat like hell when Bitcoin drops 5% to 10%. Everyone is different although to some degree you can learn to cope with risk and volatility.