Passion is better than "do what you love" because it can be directed towards any goal.

When you focus on "doing what you love", it limits you to a specific industry. This can lead to violating the Commandment of Need- is there a real market demand for what you love?...

Your passion is what you want to spend your time doing and not some random vision written on a blackboard in the sky that you somehow need to “discover”.  

Ask yourself what you love doing day in day out, because ultimately this is your passion.

Passion is not something you discover. 

Passions tend to be developed. It’s not just about being intense about what you’re doing but waking up week after week, month after month, year after year, wanting to think about the same thing.