If I give you a hint and tell you it's a hint, it will be information.

Go to bed, you fool," Calcifer said sleepily. "You're drunk."
"Who, me?" said Howl. "I assure you, my friends, I am cone sold stober." He got up and stalked upstairs, feeling for the wall as if he thought it might escape him unless he kept in touch with it. His bedroom door did escape him.

Howl backed into the door to shut it and leaned there in a tragic attitude. "Look at you all!" he said. "Ruin stares me in the face. I slave all day for you. And not one of you, even Calcifer, can spare time to say hello!"
Calcifer said, "I never do say hello."
"Is something wrong?" asked Sophie.
"That's better," Howl said. "Some of you are pretending to notice me at last. Yes, something is wrong.

I'm going to bed, where I may die.

A fickle heart is the only constant in this world

I am a total zombie just after I wake up. It takes me half an hour even to get my eyes open. Ask anyone who knows me. I can't see; I can't talk properly; I can't do anything without help. The only think I can do properly is think. And I know how to exploit my condition. I've had years of practice.