Without knowing the industry, it's hard to give advice. But, network both internally & externally. You need to know how things get done, both at your prospects and at the company you work for. Learn who the decision-makers are for whatever you sell. And listen - This one seems obvious, but is rarely practiced. Customers buy solutions, not products. Listen to learn what problems they face and be their solution, rather than trying to get them to buy your product. Congrats on the new role! Coming from PR, you already have so many skills that will be valuable in your new role - You're going to do great!