Passion
Do what you enjoy and you will be successful – sound nice and might be true to an extent, but what about someone who loves to sleep??? To be successful, you need to love what you do.
YES, be passionate about it, your excitement to work should make everyone around you – want to do what you do.
Passion for what you do makes you go an extra mile researching/reading,
passion also makes you give your best at all times.