Our moon is ever-changing. Day by day it appears to grow from a thin sliver to a round glowing orb, then fades again to nothing. This 'waxing' and 'waning' is part of the cyclical nature of all life on Earth. In another sense, it is also the nature of each of our Life's journeys.
When the moon is new (dark), it is symbolic of a quiet and meditative time – a time to make new plans for pursuing your dreams and achieving your goals.
As the moon waxes or grows, so do your plans progress. It is time to strengthen your resolve and put yourself on a steady course of action.
When the moon becomes full and bright, it signifies the fruitition of your plans. It is when your clarity and power are at their peak and is a time to celebrate how far you've come.
As the moon begins to wane or fade again, you reflect on where you are in your Life's journey and begin to purge unnecessary 'baggage' - habits, relationships, philosophies, goals, possessions, etc - until once again it's the new moon and the cycle begins again.