Hi Plygmgal,
Though it happened 10 years ago it still feels like it happened yesterday. I know how you feel. Try to meditate as if you are holding your sons hand and cross the white light leaving your son behind and come back to our world. He is happy on the the other world and he wants you to be happy as well. Saying to move on may be easy but its really hard to put into practice. God bless you dear.
Regards.