Guest, it's hard to grieve but natural. In death, we lose so much of a person. However, if there are good memories of that person, it can help to remember we still have those memories and keep them very much alive. I'm sorry for your loss and I hope time will help you heal. The best help you can give yourself is speaking with others and expressing your feelings. Check for groups that help with grieving in your area. They are often done through churches.
There's something you said that I wonder about:
"...this man who gives me such a negative false image of myself".
First, if this is a "gift" he "gives" you, you can send it back, right?
Don't open it. Who needs such a gift anyhow? Package it up and ship it out, is my advice. Still better, send it to the incinerator and let it smoke there.
Second, "false image of myself". It's false, right? So does that mean you believe it?
Don't.
He may try to make you think negatively about yourself, but you can always think: "That's false" and let it slide. He can't make you think anything. You are in charge of your thinking.
Just my 2 pennies worth. Hope this helps a little.