Can't Sleep

So It is 1:30 in the morning and I writing this post because for the past couple of days I have had trouble falling asleep. I have had like 6 hours of sleep in the past two days. I know it is because I get so worked up and anxious that I am not going to fall asleep that I don't. I even took a unisom tonight. I feel tired but I can't sleep.
Does any one have some tips for me to help me get to sleep. I need some help!