Reminding yourself that you do not own the universe when things occur over which you have no control will not be very helpful if this is all that you acknowledge. The idea is not to simply recognize one's limitations; rather, it is to use the fact of not having control over something as a reason in favor of disputing the demanding appraisal that things ought to be different than they are. This 'reappraising' will help promote the unconditional acceptance of goal-incongruent events and downregulate negative emotion. I can give you sources if you would like to examine this evidence or learn more about emotion regulation.