How do you deal with death when you haven't experienced it yet?

Please forgive me for being morbid..and I apologize now for anyone who has recently lost anyone.

I haven’t lost anyone in my family and I am 29. I feel very privileged. But I’m constantly in fear of the day it will happen because I don’t think I’m going to be able to deal with it.

I know you shouldn’t try to prepare yourself for things or even think about things that are not real…right now that is… but it will happen and…..I want to find some peace in my fear?

Is this impossible?