From Sociopath World, I remember something that really stuck with me: when someone close to you dies (including a pet), it is a horrible feeling, but over time, it tones down and — as I remembered it — "it feels a bit cruel and unfair" to that person. But life moves on. Either this or you get locked into this grief, which is never good.
I guess the trick is to, as someone presented it to me visually once, "REMEMBER, Remember, remember, but — differently, Differently, DIFFERENTLY."