This will sound harsh but it's my honest experience:
I've never met such a goldfish bowl of jealousy and envy. They were positively gleeful when someone who left would be working part time delivering pizzas. They even used this in their answers at the W/T but added some fake pity. They also had an incredible ability to assume they themselves could easily have been more successful. "I'd have been a rock star if I wasn't in the truth" syndrome.
Also rather than hate for others to be successful I noted that they often didn't really acknowledge success. Sometimes this was because they didn't understand how hard people have to work to earn a lot of money or compared someone's achievments to an even more famous person. Some were too thick to understand or so self absorbed in their own JW community.
This is based on numerous this said about people who didn't go to all the meetings, those who were "weak" and those who had left. Especially those who had left.
There is a patter of modesty that JW's learn, but many are far from modest, caring or empathetic. Some are, but the cult brings out the worst in people.
mmxiv