You must have me!
I am the 4th state of your mind during each step you take. We must stick together!

Solution

This bag is close to your soul every day and represents you with every state of mind that you have.

It is the bird that sings you when you are happy, it is the cold and frozen friend that follows you when your soul is empty and blue, it is the pink flower that rises in your mind when you have new idea or a new start in life and it is the brown companion when the hope is lost.

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