Avoid keeping your private key on anywhere that their is internet connection, make sure you secure your private key offline, anywhere that their is not internet connection, I think if you want to properly secure your your private key, make sure you get a metal steel and carve your private key on it, I think that's a nice way to secure your private key. lot's of people store their private key on their email address and other places online which can be hacked at any moment, we have to be careful and we don't have to secure our private key online.