Grey days

I know I should be happy and enthusiastic but I'm not. I'm at work - the poker one and it's hot here, no fresh air and we're not allowed to open the windows. And I'm falling asleep. I talked to my boss, he will tell me tomorrow if he wants me to stay for a part-time or not. I'd like to but I don't care so much. I want to go to bed and get a full night sleep finally!