Here are their answers and tips.
Adam Vincenzini of Paratus Communications (and PR Daily):
Aim to be two things: proactive and useful. Being proactive will help you in your client, media, and co-worker relationships—even if it is a simple thing like updating people on the things you’re responsible for before you are asked. Being useful applies to those relationships as well. The more useful you are, the more trusted you become.
Allan Barr of The Big Partnership:
New PR professionals should immerse themselves in digital and social media channels from an early stage.