If you are your actions, then that means your actions are driven by your identity. If you are still you, your actions won't change.
If you are your thoughts and feelings, then that means your thoughts and feelings could be no other way as long as you are you.
We are not actions, thoughts, or feelings. If we recognize that, then these are all relatively mutable, and our ways can improve over time if we wish.
It's by identifying less, not more, with something about us that we change it, or prove it. That doesn't mean disowning: that means recognizing we never really owned it in the first place, but were clinging to it.