Going to Therapy for the first time...

So I'm going to see a therapist tomorrow. The main reason is that my meds recently stopped working, and I need a new prescription. My regular Dr is ok, but I'd rather see a specialist. I've been picking since puberty, when I first got acne. It's never been a super big deal, more of a self care habit than a destructive one. But this time when my anxiety meds stopped working (I get used to them every 2 1/2 years it seems) I started having OCD symptoms instead of my usual panic attacks. That's when the picking got compulsive. I couldn't break out of the trance, even when there was nothing left to pick. My arms and shoulders are a mess. I can deal with anxiety, been coping with it my whole life. But I have no idea how to handle OCD. That's why I'm finally going. But I'm scared. I don't know what I'm afraid of, but I really don't want to do this. You guys are the only ones who I feel I can tell this to. It makes me feel weak that I can't handle this on my own, even though I know that's not true. I've taken all kinds of psych classes, I know about the nature of OCD, addictive behaviors, endorphin responses, etc... I still feel like crap about it though.