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
6. Waste time on faucets (we all did)
7. Collect dust and pay high fees on it
8. Leave coins in an exchange
9. Trust the wrong people and get scammed
10. Panic at a price correction
all that I ever experienced, i dont remember my wallet password, fortunately there is no balance in the wallet.
and i lose my paper wallet, i forgot to put it. really careless me, and about fauchet its realy wasting my time and i leave that