Discovering your passion is the first step towards finding meaning in your life.
Passion is only part of the equation. You need to take a deep look at how much money you realistically need, and use that as a guide towards what you should do.
You don't always know what you like until you try it. Commit to trying something new once a month. Who knows what you might discover?
A mentor can help you figure out your career goals, personal goals, and help you get on a path towards achieving them. It's best to find a mentor when you have a general idea of what you want.