Have you memorized your Eatherwallet private key?
Do you mean "Myetherwallet"..., there's no way i can memorized every letters and numbers of my private key al you need to memorized is the place where you put or hide your private keys.
How many of you have to remember your private key,
I think only 0.01% of all users of MEW have thier private key memorized in every letters and numbers that it consist.
If you Lost your private key what will you do
I were to loss my private key, my only option is to find it in any possible ways.
and how do you recover?
??
There's no way you can recover your account in MEW, and if there is, it will take a long period of time to proccess