I want to end my girlfriend's obsession
What is it though? What is she obsessing about?
She has too many body shakes, she speaks too fast, she eats too much sugar.
That behavior does seem a bit excessive. Have you tried to talk to her about these things?
I'm good at keeping an open mind and being positive, positive things happen to positive people.
I'm glad you are trying to stay positive, as this kind of attitude is crucial in trying to help her stop all of these obsessions. Too much of a good thing is bad as well, and you have the choice to try to heal her from it. I'm sure you can do it and she would love that too.