Simcha Fisher has a wonderful post on these two things, and how they're related, right here.
Here's a couple of snippets to wet your appetite:
My husband thinks I’m beautiful, but I don’t. I hate wearing special sizes with labels like “Curvy Coordinates!” “Luscious Lady Plus!” “Gee, Your Ass Looks Enormous!” Being fat feels bad, but knowing I’m still gaining feels horrible. The real misery is in feeling like I had no control.
conversion is incremental. That’s how it is, whether it’s for me getting back into normal-sized pants, or for more dire lessons of the soul. For the hypothetical male prostitute, the goal would be to renounce fornication and seek healing for his disordered sexual appetites. But can he do that in a day? Of course not. You can’t just strip away every aspect of your old life in a single motion, and expect to live that way from now on.