Insomnia

I used to be a bad thinker. I think too much during sleeping, having exam or maybe relationship between friends or anyone! Well, I can't sleep right now! I was so tired. Nevertheless I think too much until i can't sleep! This is so bad! sigh!!! I have lots of worries! WHat can I do??? I just feel like blogging and studying! Is is because I think too much about evidence for Thinking Skills subject???hmmm.....