The saddest part in life is saying Goodbye to someone you wish to spend your lifetime with. The saddest part in a life would be to spend a lifetime with someone who didn't really want to spend theirs with yours.
You're ready to fly off at any moment and that changeability makes you a winged creature, in a way. Birds, wings, and feathers represent that lightness of spirit that so captures who you are. Also symbol of hope, balance and good luck