New Year's resolutions, anyone? They make you reevaluate your lifestyle choices, but they don't seem to work past the first week.
Say you make it a point not to curse this new year, but you still end up saying fart nuggets by the time your math test is returned. It was a mistake; you didn't totally fail at having a cleaner mouth. Resolutions are goals that you achieve over the next year through learning from mistakes and getting into the new groove. So don't get discouraged by a few fart nuggets along the way. Think positive and believe you will ultimately reach your goal.
