If you wait until all the lights are green before you leave home, you'll never get started on your trip to the top.
Taking a risk and putting yourself out there is the first step in your success journey. Risks differ per individual, but often take the form of public speaking. If public speaking is the risk you need to take in order to put your foot in the door, then learn how to become a world-renown keynote speaker:
https://www.ziglar.com/product/ziglar-speakers-institute/