1. Be patient, don't panic.
2. Buy and hold.
The first attitude is very suitable to be applied and very many traders experience tremendous panic when they see the market price drop, especially Bitcoin is now at $18k.
It's becoming increasingly apparent that other coins are very influential on Bitcoin. So, the opportunity to buy to increase the volume of Bitcoin can be done again for long-term investments. The current market situation in my opinion is a very tough test to be applied by those who are impatient.
Do not panic. Everything will get better.
easy said than done , imagine you have bought bitcoin at 25k then suddenly over night the price went down to 18k do you really believe that normal investors will just sit down and relax? I'm afraid not mate because what we need to sustain is our funds staying even if not exact or the same but at least closer to our capital , and seeing it fall is something we dont like so panicking will take place and wrong decision will cover the investments.