Character Growth in Luggage

I'm reading Terry Pratchett's Interesting Times and I'm feeling sad for the sapient pearwood luggage. It's feeling lost and unowned and thinks perhaps nobody wants it anymore. It's drawing little marks in the dirt with one of its many, many feet as it tries to figure out what is going on.

The reason I feel sorry it is because it has always been this amazing, unstoppable, completely confident creature. It can kill anything, it always knows what to do, and nobody ever tries to tell it not to. Or at least they don't try twice.

So to see it adrift and feeling forsaken is hard. But then who said character growth is easy?