I always like the physical comedy because I actually do a lot of it in my own life, but not on purpose. I am the klutziest person on the planet. It's easy for me.
Figure out what you are meant to contribute to the world and make sure you contribute it. If this requires public speaking or networking or other activities that make you uncomfortable, do them anyway. But accept that they're difficult, get the training you need to make them easier, and reward yourself when you're done.