Can't Sleep

It's another one of those nights where I wake up way too early and then just have too many ideas running around in my head and can't seem to fall back asleep.   Then it finally get's to the point where I am just like - well I may as well get up and do some of this work or something.   So I got out of bed at 3:30 am today.  

Anyone else have this problems?

Any ideas of how to get over it?