Now, I get the sense that she feels frustrated with me because she knows I'm not completely forthcoming with her. And I'm not. I'm so overwhelmed by the potential certain embarrassment I'm going to feel when I reveal to her that it is the feeling of embarrassment itself that paralyzes me. You are obviously reaching out for contact and help, and that's the good news. Somehow, up till now, you've made choices about keeping those feelings hidden that have kept you primarily isolated.
Isolation is dangerous, and counter-productive.
Again, the good news is that you're genuinely reaching out, and that you have a desire to change. Therapy is a setting that can make that journey a safe one for you. It can be a place where you try out new behavior and new levels of self-revealing, and then learn how to integrate that into your larger life. Your intellect can only take you so far into the realm of uncomfortable feelings. Take some steps beyond that point.