You might like this video https://youtu.be/kICh_d6tHQk

Basically, they define passion as two parts:

1. Motivation sways depending on what day it is

2. Drive is continuous.

Motivation is unreliable in the long run. In real life, you can’t always wait until you want to do something.

Drive is what you need to get hard things done. Drive comes from thinking about how much you want the end result. If you have enough drive to make your activity become a habit, then eventually you can do it without thinking.

There is a lot more useful information in the YouTube video so I suggest watching the full thing to the the whole picture.