Passion is everything. You cannot inspire unless you’re inspired yourself.

In 25 years of studying communication, I’ve never met an inspiring entrepreneur who isn’t freakishly enthusiastic about his or her idea. Steve Jobs, one of the most passionate entrepreneurs in business history, may have offered the best definition of passion in one of his last public presentations, in March 2011 (he died that October).

“It is in Apple’s DNA that technology alone is not enough — it’s technology married with liberal arts, married with the humanities, that yields us the results that make our heart sing,” he said.

When turned into a question, Jobs’ statement can have a profound impact on your happiness and success. Discovering your true passion is as easy as asking yourself:

“What makes my heart sing?”

Notice how the answer to the question — what makes my heart sing — is a lot different than the answer to the question, “What…