Not sure that is possible, by nature the mind is undisciplined. While if it was not, then it would cease to be creative and original.

Certainly human mental culture, taken collectively, if undisciplined, will fail to produce effective and truthful models of reality, and there is a clear benefit to using systems of research with disciplining frameworks, when attempting to formulate public models of reality. It was after all, the conspicuous failing of undisciplined, human cultures, such as religion, to produce good models of how the world works, which drove people to create, first philosophy, which attempted to bring thinking within the framework of mathematical logic, and then to invent natural philosophy, (now known as science) which added the experimental method and the use of experimental evidence as extra safeguards. But of course those only apply to public thought.

While if you are refer to thought crime and thought sin, they are almost certainly impossible to prevent, and rather pointless to do so. Since there is no discredit to me in thinking of doing something wrong, if I then immediately decide, it is wrong, and refrain. But of course imposing that injustice, is of course the whole point of the religious trick. By setting up impossible targets to ensure that people must fall short, religions ensure that there is a never ending demand for their services as forgivers, and the great con trick rolls on.