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.
I like your calm, but not everything will get better, some things will get worse and others will remain as they are, it's up to the owner of the wallet to know what will be better to sell or keep. I personally only have in my wallet btc and a little bit of eth and I'm happy with that because I know that in the near future they will come back on the axis and go up again.