"The false nature cannot be, and need not be changed, but it can be dissolved and replaced by the True Self. Try to see the difference in an impossible effort to change the false self and that of replacing it with your essential self. A hawk cannot be changed into a dove, but it can be replaced with a dove."
~Vernon Howard
This is an interesting and insightful observation. Transformation isn't a simple act of will. Although you probably need to want to change. But using the same nature to try to change that nature, isn't going to be productive.
If you understand, things are just as they are; if you do not understand, things are just as they are.
~ Gensha, Zen Master