CEO of a $16 billion business says the way you write emails can break your career

CNBC reports:

As CEO of Accenture (NYSE: ACN)'s North America business, Julie Sweet runs a $16 billion business and oversees a team of more than 50,000 employees. So she knows a thing or two about the most valuable skills in the corporate world.

The best investment a professional can make is to develop one often overlooked skill, the CEO says.

"What's the greatest advice I give?" Sweet tells CNBC. "Develop excellent communication skills." Both in person and in writing, such as when using email.

Advice.