I dreamed I was training in a gym made of glass

It was raining outside, but the rain didn’t touch the glass — it just slid off like oil. The mirrors inside were all cracked, but when I looked at myself, I saw someone else: older, slower, smiling like they’d already won. I sparred with a shadow that kept saying 'you’re not fighting for anything anymore.' I kept punching anyway. Woke up with my knuckles raw, like I’d been doing rounds for hours. Not sure if I lost or just remembered how to fight.