Thank you all for your imput, please continue to add more advice.  This is an issue for so many of us, and we all need good ideas & encouragement to lead more healthy lives.  
I know my heaviness isn't due to eating junk or fast food or from guzzling sodas or tea.  But this really caught my attention:
Quote:
Sigh.  This is going to be difficult and cause a really drastic change in my lifestyle, but if it will improve my health then I will simply have to...
...go to bed at 5PM! 
  Seriously now, I believe you're right and I will start to limit/eliminate what I eat before bed.  The trouble has been with Mister's crazy work schedule we don't sit down for regular meals, each of us eats when we're hungry, or whenever we can.  I often run around doing things and neglect to eat until late at night, often right before bed.  So I will now try to plan my days better & have a good meal before the evening chores, and try to eat nothing else until morning.
Beekissed, you also gave advice that was really helpful to me.  I will try to get a good night's rest every night (okay, no more late night BYC forum!) and try to keep my mind in pleasant places.  I've been going though a lot of troubles lately, and spend too much time feeling resentful towards the folks who are causing the trouble, many of them in my own immediate family.  I know I need to stop carrying those grudges & hurts around, to forgive & go on, it's apparant they're affecting my health.
I've been taking my BP at a local grocery store and it's been much better than the readings I got at the doctor's.  On the high end of normal or the low end of high-normal. 
 Could the machine be inaccurate or am I secretly made nervous in doctors' offices?  
And would I get an accurate reading if I checked my BP in the 
middle of exercise?  Because the grocery store is about 10 miles away from home.  I was thinking of putting my bicycle in the van and parking at ever increasing distances from the store.  Then I could get out, ride to the store & check my BP (something the doctor recommended I check daily) and ride back to the van.  Each day or two I could attempt longer distances until I could ride the whole way from my house to the store & back again.  Does that sound like a good plan?
Today I got a good workout while helping at my church, we unloaded a huge tractor-trailer full of pumpkins for our pumpkin patch.  Pumpin' pumpkins!  (A side bonus was taking home a dozen cracked pumpkins for my chickens!)  I just had a good dinner & won't eat any more this evening.  And now I'll relieve even more tension & go out and gaze lovingly at the baby chicks & ducks in my yard.
God bless you all for your support & advice, may you be well & healthy too!