Do not pay attention to the thoughts. The idea is to relax, let go in the flow and release the burden that distracts you. Simply, let the thoughts pass as they have arrived, do not put an effort to block them because in that way you will not be able to let go which is one of the aims. Try not to analyze why something appears, is it good or bad, try not to think what it means. When you start losing focus, repeat the affirmation once and return your focus to the essence of the affirmation and let go in the flow. Repeat the practice when and if the number of your thoughts starts to rise until it distracts you. Then, concentrate on your breathing, focus on inspiration until the air fills your stomach and then in the same manner focus on expiration. Do not be concerned, as with everything else in life, this is all about practice, exercise and experience. It will become easier and better with time.