Value Your Vision
One of the reasons women don't speak up in the workplace is because they don't value what they see, such as noticing the moods of people engaged in a business deal. Yet noticing feelings is extremely valuable in those circumstances, and once women are able to value their vision, they have a better chance of communicating what they see to their colleagues.
Take The Female Vision: Women's Real Power at Work by Julie Johnson and Sally Helgesen, and adapt it into an online experience. This would allow users to put its salient points into practice, and to use their expanded vision to excel in the workplace.
I created three sections the user would work through, with several activities per section. It begins with a quiz so users could have a baseline measurement but also because it would allow us to promote the program elsewhere, with the quiz a teaser. Over time, this became our most popular program.