Hazard will eventually win the ballon d'or if he moved to Spain. I'm not convinced he can do it in England and especially playing for a defensive minded manager like Mourinho. Mourinho in the big matches will park the bus and inhibit Hazard from showing his true ability.
As for being more selfish and shooting more. Case in point, Hazard could easily have reached the round number of 20 this season, and 100 in his club career if he took his penalty vs Sunderland in Chelsea's last game of the season but instead he gave it to Diego Costa to take. The guy just doesn't seem to give to much of a shit about it.
Besides, i'm not sure what the obsession is about scoring 50 goals. The likes of Zidane, Laudrup, Ronaldinho and Iniesta never scored even 30+ goals a season, yet they were the best of their era.