What are the measures to keep your private key safe and in memory ? Are there any alternatives to retrieve the key back ?
In myetherwallet there has a 2 types to login your account. if you neither forget nor lose your private key, you can get the file that you downloaded when you create your wallet then upload the file to login your account. this term is called keystore/JSON File. then if you deleted your Json file and also lost your private key, you might used Mnemonic phrase to login these are the words that has a phrase or rhyme.