I see envy confused with jealousy a lot. Jealousy means you fear the loss of something (that you usually already have), or are insecure about it being taken away. But people commonly use jealousy to mean that they want something, as in, "I'm jealous of those gozongas, even though I am perfectly beautiful as I am."
Envy is the word we mean. Observe: I envy those of you on THAT side of the agent/publishing deal. I envy people with trust funds or other sources of independent wealth. (I would envy my Nemesis, but in fact it is impossible to envy someone so detestable.) I envy the total lack of responsibility that my house-bound cats feel. I envy those who have a full view of the Golden Gate Bridge.
I am NOT envious of anyone who does not have health care and I am sorry that people don't. ( I got the statement in the mail from the hospital for that unpleasant and sad surgical procedure I had some months ago. $12,000. My responsibility? A $100 co-pay. That's it. My insurance pays the rest. Cripes.) I am not envious of anyone who doesn't have the time or stamina or materials or ability to follow their dreams. (The list of what I am not envious of is quite large so I won't go on.)
The word envy generally carries a negative connotation, hence its position on the list of seven deadly sins. Envy infers that you resent another person for having something you perceive as lacking in yourself, and wish the other person to be deprived of it. Observe: my nemesis envies my striking beauty, wit, and cunning, and that has clouded his judgment so much that he has not noticed the army of marmots I sent his way to undermine his plots. (A tiny example.)
Were you using the word jealousy improperly? I've done it loads of times even while knowing that envy is the word. What are you envious of? What are you not envious of?
Bonus link for you: Pet Shop Boys' Jealousy