How do you move on and forget the past with the past thrown up in your face as heritage?

Try the best you can to live in the now. Works for me. ;)

just tell people you dont want to talk about it

Be in the space where none of that exists......
that's it!!!..... Get rid of the you that would be affected
by all of that which you speak. That you is 
an illusion. It will disappear in an instant. It is not who you are.
     The idea is to silence the mind 
so it doesn't come up with situations 
like you present.
like The others have said by being in the now,
in the present, in the presence...
     And of course The mind doesn't want to be silent, 
it wants to create situations like yours. WE must be 
masters of the mind so that it is always at peace
instead of in turmoil.