What is your personal brand at work? Not sure? And does it matter? Well replace "brand" with "reputation" as our guest entrepreneur and author Dorie Clark suggests, and it matters a lot. We hear how to optimise your personal brand and the steps to take to kick off a career as an entrepreneur. And researcher and executive coach Tom Loncar gives Lisa the hard truth about whether her power pose has any scientific validity or if it's just another stretch. Producer: Maria Tickle