i need to lose some marbles

I have this enormous bag of marbles.
Some of them are really old. Some are new.
Most of them very good people gave me. Some I found myself.
Each one means something- stands for something: makes me feel something.

For the longest time, I have been trying to forget that I have been carrying around this bag. It is heavy. And even though each marble makes me feel something- it isn't necessarily a good thing.

How do I pick?
Which ones go? Which ones stay?
Where do I start?
What justifications do I use?
Am I educated enough?
Am I wise enough?
Can I trust my feelings?
What is redeemable?

"Please, will YOU help me? Rescue me from this enormous weight. Help me keep the right marbles and help me lose the others!"