Yes, exactly what Cuchculan said. I've been seeing a therapist for a few weeks now for my panic attacks that just started happening a couple months ago, and she's been telling me the exact same thing – to simply give in and let the anxiety pass. It's really hard, in fact, I'm still struggling with it. My first instinct is to try and fight a panic attack off, because my fear is just too much. I feel like I'm really going to die, and that fighting it is my only option. But I always end up falling asleep and waking up the next morning, and my doctors say that I'm healthy. I've found that my anxiety is a lot less intense and easier to manage when I just tell myself similar things to what Cuchculan says: "whatever will be, will be".