I was trying to move my character cast bar and was setting the opacity, now i have no character cast bar. Is there a way to get it back? i have the target cast bar just not my own.
I think it's F11, the key that turns all of your windows to 100% opacity (0% transparency).
Press that, and adjust your cast bar's settings as needed. I find using like Call to the Guild hall the easiest since it's longer cast time to get a right-click in.
If that doesn't work, try F10? It's been a bit since I've been in game.