Do like the SOAP OPERA writers do, create a BIBLE about the Character you want to be online. List what you WILL SHARE about yourself: List your Characteristics Personal story Professional story Family Info Locations etc that you are willing to reveal. MAKE A POSTER OF IT.
When you are online writing a blog or whatever, look up at your poster, if it is not on the WILLING TO SHARE list, erase it and start over. Just set these limits and after a while you will get used to being a limited version of yourself while online and honoring your privacy will become natural.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.