I am the opposite- I can sleep for 8 hours with thrips to the loo, without even trying.
I do have a sort of routine. I rarely watch TV beyond 10 pm. I check my computer, wash the odd coffee cup, in this weather fill a hwb then have a quick shower. I enjoy reading in bed at night so I always have a book on the go. I always try to turn off the light at midnight, turn over on my left side, and usually I am asleep within 5 minutes. I am trying desperately not to have a snooze or three during the day.
I know it is easier said than done but try not to thing of home or work problems and try to relax. The more you think about sleep the less likely it is to happen. I take after my father whereas my mother was like you, slept little.