btfb, IME when I can't get to sleep to begin with, it's because there is something that I'm 'dwelling on', or something I'm trying not to think about, and then as soon as my head hits the pillow - up it pops into my mind again. I've been OK for a few months now, just go to bed too late at the mo, and need another hour really. You could try...say an hour before bed, writing down everything that's on your mind, and then winding down - bath, relaxing music/book... before you go to sleep.
Waking up early is a pain...sorry to hear about your sleep probs FF. I've also had this to some extent, and last summer, because I'm light sleeper, it was aggravated by the noisy dawn chorus too.
Andy