Purpose is the reason for which something exists or was created.
How do you find your purpose?
What moves you?
What drives you?
What motivates you?
What brings you joy?
Purpose is something you are passionate about, and you can do with minimum effort and maximum satisfaction.
What provokes you?
What irritates you?
What makes you enraged?
What displeases you?
Purpose is to take on a problem and find a solution and be a catalyst of change.