With great power comes great responsibility, and ‘being your own bank’ is a great power indeed. Good safety practice begins and ends with securing your private key correctly, or alternatively securing the seed phrase used to generate your private key. Hardware wallets that keep your keys off the internet are highly recommended. However, mobile wallets and online wallets can do the trick as well, especially at the beginning of your crypto journey. Whatever you do, make sure you have a backup of your keys in case your original device gets damaged or goes missing.