Andy Lopata's guest on this week's Connected Leadership Podcast is Mark Herschberg the author of The Career Toolkit.  Mark has had a varied career from cyber security to creating marketplaces and new authentication systems and teaching at MIT. In this podcast Andy and Mark take a practical view of how relationships play a key role in a successful career, including both internal relationships in an organisation and widening your network with a diverse external network. Internal professional relationships open up access to information and differing perspectives. Career growth and promotion prospects are linked to how you sell yourself. With external relationships, diversity is important to add value to your network.