How come you're still up ? Shouldn't you be asleep by now ?   I've been having a hard time sleeping lately .   As far as I know , insomnia is usually caused by stress . Are you stressed at all ?   Well , I'm really worried about my grades . I didn't think this course would be so stressful .   You're a good student . I'm sure you can do well . What you need to do is to relax . 