It's never nice to have the memory of losing someone you care for stuck in your head. When you think of Edd, don't think of his death, think of all the happy memories. It's said a lot but it helps us move on. And it's hard to but he wouldn't want us to be miserable; I think he would want you especially to smile at the good things you remember. That doesn't mean you forget about it but take some good with some bad so you don't dwell on it constantly.