"Be the change you want to see in the world." -Mahatma Gandhi
The world you live in is a reflection of what you put into it. Yet, there are times when the world around you is what needs to change. Nature flows in cycles, seasonal migrations, constant change is inevitable.
Value what you have had, but be ready to let it end and start anew. You cannot change the past, it makes you who you are today, but it doesn't have to make you who you are tomorrow. Let yourself be a part of the cycle and let change be a part of you.
As you become one with the natural cycle of change, you will see the effect you have on the world around you.
'Everyday that passes my very existence changes the way the world works for everyone I meet.' Repeat that to yourself and realize how powerful you are.