It hasn't been easy, and it won't get any easier. I can envision myself sometime in the future, when pondering a date with a woman, thinking, "I wonder what STBXW would think of her," or "She's a big improvement over STBXW." Or, "Wait until STBXW sees who I've got lined up to replace her!!"
This is wrong, wrong, wrong. But I know that it will happen... Only after I shake this way of thinking will my mind be clear enough to find the perfect woman for me.