What mistakes did you make, and what advice do you have for others to be careful?
What are the best and worst ways of storing a seed in your opinion?
As long as I have been on bitcoin forums and have never lost bitcoins to anyone from holding bitcoins I have never made the mistake of holding bitcoins. But my advice for every bitcoin holder is to keep your bitcoin wallet seed phrase very safe. Keep the wallet seed phrase to keep your bitcoins in a safe place so that no one can steal them somehow. But the best way to keep the seed phrase of the wallet containing bitcoin safe is to write it down in a notebook. I write down the seed phrase of the wallet that holds my bitcoins in a notebook and keep that notebook in a place where no one but me can see it.