I know this wouldn't work for me, and I don't think that it is really effective.
The problem is that we know that the connection between stopping the habit and getting the reward is arbitrary.
I've found the most effective, long-term habit change comes from self-awareness, compassion for ourselves, and commitment.
The challenge of eliminating an old, unhealthy is that a habit is composed of the knowledge of what do to, the skill of how to do it, and the desire to do it. We can't lose the knowledge or the skill. So we must focus on the desire.
The challenge of creating a new, healthy habit is that we must learn all three: the knowledge, the skill, and the desire.
I eliminated cuss words by practicing self-awareness of the thoughts and feelings that lead to my speaking. For three years, I would ask myself three questions before I spoke: Is it true? Is it kind? Is it necessary? I only spoke if all three were true about each sentence. Once I got the sentences right, I worked on phrases. Then I brought it down to words.
It became a natural gift to speak from a peaceful place, with gratitude and appreciation.
I save my cuss words for my journal!