Pappy, you are facing a double whammy, retirement and old age. I worked shift work and was the lightest of sleepers, anything would wake me up. After I retired it took me a while to sleep all night like regular folk, then came old age. All us folk around 70 sleep poorly, I sleep like a log for 4 hours then toss and turn and cat nap for the rest of the night. After 4 hours my assorted aches and pains from doing dumb stuff when I was younger get the best of me, there is no way I can get comfortable and sleep soundly. All my friends are the same, when we get to gether we all complain about our sleep problems.
When I go several days without near enough sleep and start waking up at 3:30 every morning, I medicate to keep me asleep to break the cycle, benadryl is my friend. In extreme cases Ambien is my friend but only on rare occasions when nothing else works. My last prescription of 30 pills was filled in 2014 and I still have some left.