Peaceman,
You're not alone in this way of thinking. I have heard other people here describe how their anxiety drives their ambition, creativity etc. I used to feel like if I didn't have my anxiety what would drive me? I thought I needed my anger and aggression to move me through life. I was used to living in such a frantic, dramatic way that I didn't know how else to be. I didn't know who or what I would be without it. It didn't seem to me that there would be much left if you took away all my anxiety and the behaviors and bad habits that went with it. I didn't know how to interact with people in a calm assertive way at all. Either I was putting myself out and bending over backwards for people and then resenting it, or raging against people and events to an extreme degree.
If you take away the anxiety, you will still be the same person, just a mellower version. You will still be creative, it you are creative now. It will just be a little different, but that is just growth. People are supposed to change over time, and you can't hang on to who you used to be, no matter how hard you try. You just have to let go and believe that what comes next will be great too. You have to trust in yourself and allow yourself to change, it will be OK. The peace that you get from lessening your anxiety will be worth it.
This might sound a little strange to you, but you really could be a completely different person if you choose to be. You could do something like take a big plate of cookies into work with a card attached that says "Merry Christmas everyone! from Peaceman"
Try doing the complete opposite of what you would normally do and watch the results. You will be amazed, and so will everyone else. Surprise people, it's fun.
This last paragraph might belong in your other thread, but I have already posted there.
Rachel