There is nothing to abandon. The idea that certain thoughts and feelings are inconsistent is dropped. Even that which appeared very ugly, inconsistent and evil has lost its ugly character, and has undergone a transformation in the process of meditation. It has not been rejected as it was thought earlier. It has been absorbed by a transfiguration of its inner constituents.
Thoughts are incapable of rejection finally, in the end.
They cannot be abandoned, because they are our thoughts, and not somebody's thoughts. That which we have to reject is not the thoughts themselves, but the way in which the thoughts function. Here is a subtle distinction in psychological operation. For instance, we do not reject a person when we hate a person, but only dislike the way in which the person himself or herself acts in the context of things. It is a peculiar, subtle distinction that we have to draw between the sinner and the sin, as they say, the person and his conduct and behaviour and the way he manipulates relationships.