Can I self-diagnose?

I have insomia. It's a problem I've had for about 10 years. I don't sleep well. And when I do sleep, it is always for the shortest amount of time ever. Tonight, I am up at 1 a.m. writing on this silly blog, while my family is nestled all snug in their beds while visions of my eyelids rush through my head. I don't know the reason I don't sleep. I am an EXTREMELY light sleeper..one noise will wake me up. Well, once I'm awake, I think about all the other things I can do with my time besides lay in bed. Then, all I can hear is my husband breathing or the noises outside and then I find myself typing in blogspot. May have to turn to medication if it doesn't get better....