I hear you Gwen - you were an everything to everyone and a nothing to yourself.
We build the wall reinforced so we know we will never be put through anything like this again, never be hurt like this again and never have anyone treat us this way again. Its normal to do this and understandable. I hope that in time you will see things differently and lower your wall a little to allow others on to your side and that your faith in humanity is restored. There are some really good people out there in the world.
What you have been through over the past year is HUGE; be kind to yourself, it really is a case of time and allowing this process to naturally take its course. Remain open to possibilities and changes will happen.