I have read the book and seen the movie *Eat, Pray Love* by Elizabeth Gilbert.
In this book (which has nothing to do with drug addiction but I would say she was addicted to her men in general and of not being alone) she tells a friend of hers that she misses *him*.
He says *so miss him*.
She says *I love him*
He says *so love him, send him light and love everytime you think about him and then DROP IT*
So, one of my tools is, that when I think that I am missing my ex-addict-fiance....I close my eyes and say out loud (if I can) "ex-addict-fiance..... I'm sending you light, love and encouragement" and then I drop it.
I may do this 5 times a day or sometimes once a week, but it helps me.