I have found that medication has addressed the anxiety levels and allowed me to have my complex PTSD go almost into total remission (except for recently when I got triggered). But I continue to do the hard work of therapy as frequently as possible. There is no substitute really. It's difficult to self-soothe when you are in that kind of state. I'm a Zen Buddhist, but during times of difficulty, meditation is impossible and even my teacher recognizes that. I started doing what is called "work meditation," which involves mindfulness while doing ordinary activities like washing dishes or showering. It ends up refocussing attention onto the here and now so it works as temporary relief and make you feel more in control of things in general.