1. Do not remember electronic wallet password
2. Do not back up your wallet
3. Do not research new services
4. Buy and sell based on feelings
5. Leave your money in the electronic money floor
Most of the common mistakes of bitcoin holders are they always do panic selling. Most of the bitcoin holders are panicking if the price of the bitcoin is going down. They will sell immediately their bitcoin because they see that the price of the bitcoin is going down. I can say that that is a bad idea.