True positive thinking is subtler than that. Through it we are entering into the causal energy fields of the Universe and through our vibrational output we can manifest our deepest desires. It is not a matter of our wrestling our minds into a state of submission through constant “positive” repetitions (though that is a helpful technique when times get tough).
The enlightened state is beyond thought. That is because what is a positive thought to one person may be horrendous to another. For example, the thought of bearing ten children may bring joy to some and distress to others. Yet, positive thinking, as I said, is often the outcome of enlightenment. This is because, from the enlightened point of view, all is put together perfectly, does not need to be manipulated, and is just right just the way it is.