I spend my short life building walls for a living

Walls that keep in my emotions
And walls that keep out the ones who would corrupt them

But the mighty castle I've built has many flaws

They keep me safe, but trap my negativity
They protect me from others, but not from myself

But the worst part is that these walls may as well be made of paper

They crumble with the slightest of wind
They melt with the lightest of rain

These walls hold me up, but never when I need them