Can't sleep!! Again!

I don't know what in the world is my problem but for the past week or so I haven't been able to get to sleep on time for nothing!!   One night I did good went to bed around 9 and then I got a call on my cell around 11 and that night it woke me up and ever since have been on a very crappy sleep schedule!   I hate not being on a regular schedule!   And what gets me is that I have things on my mind but they aren't stressful things really, just everyday life things that are good, not bad and not stressful so why on earth can't I get back on a regular sleeping schedule?? Ugh!!   If anyone has any ideas they want to share to getting back on a reg sleeping schedule please share!