If you are making excuses, you are trying to justify doing what you are not supposed to be doing. Excuses represent mispriitorization, disorginization, and disingenuousness. They are the hallmark of relapse behavior. Even good excuses ultimately mean that something got in the way of what you should be doing. Excuses are a defense. They usually are a sign that a character defect is operating to defend your ego.
Count how many times you make excuses today. They may be blocking you from your goal. Organize your life to eliminate them and you will find your life will be less stressful and happier.