Hey Zulie—I actually wrote a whole book about this (LOL, right?!) Here’s an excerpt:

http://www.oprah.com/inspiration/camille-deangelis-2-pernicious-fantasies

I forget who said this first, but I have found it super helpful to define envy as motivating (as you do here)—ultimately a positive feeling—whereas jealousy is corrosive. (But “Life Without Jealousy” just didn’t have the same ring.)