To make any sort of meaningful progress, whether in the workplace or your personal life, you can’t be afraid to make bold changes. Being a cheerleader for change often brings conflict, resistance and uncertainty, but you shouldn’t let that hold you back. It is usually only when we take risks and lean into the unknown that brave, meaningful change happens.

There’s only one way to become an effective public speaker: practice, practice, practice. That said, there are techniques that’ll help you succeed. For starters, avoid monotony by effectively using emphasis, let your gestures emanate from sincere feeling, turn your audience into a crowd and improve your voice by attending to your cardiovascular health. Finally, test your arguments and the arguments of your opponents, and use imagery both to prepare for and to construct your speeches.

Leadership Journey: Mark Cuban

Mark Cuban is one of those guys who moved to Dallas, Texas for the sunshine and the women. But he is also one of those extraordinary characters who took a little and turned it into a lot. Specifically, he is the founder of MicroSolutions and Broadcast.com, which he turned into multi-million dollar businesses, and also happens to be the owner of an NBA basketball team. Want to know how he did it?