" . Much as an organization is unlikely to invest millions of dollars in a product that has a small chance of serving many customers, you don’t want to devote thousands of hours of your learning and development time to an area for which there is little demand from your employer or community.
This is one of the critiques of the “follow your passion” advice — that it presumes you are at the center of the world, and pursuing your own joy (not service of others) is the objective. I have found that those who leave a lasting mark on the world, in contrast, are always asking what they can give.
Exploring specific actions to take, starting with this question, allows you to continually redirect your talents to what's needed most in the social circles close to you. "

― Tom Rath , Life's Great Question: Discover How You Contribute To The World