I’ve always been a firm believer that it’s not what you know. Rather, it’s who you know that makes that critical difference. In a world built on relationships and networking, knowing the right people does open doors and a universe of new opportunities.    If I share with you that I’m on the plane to the Philippines for a networking lunch, you may think I’m nuts. But it’s no ordinary lunch. It’s a networking lunch with Cory Quirino, a widely revered Filipina health, beauty and wellness guru; television and radio host all rolled into one. Think of Quirino as the …