I used to be able to sleep as soon as my head hit the pillow.

I have had a lot of troubles sleeping recently. I think its just due to have a lot on my mind and thinking so much about stuff I can't actually switch off and just sleep. Once I'm asleep I tend to wake up a lot through the night, too, where as I used to just sleep straight through.

I can't sleep when it's too hot though. arghhh