I exercise every day, first thing in the morning, usually around 5:30 to 6:30 AM. 
 
Lifting one day, cardio the next. The cardio is either 5 miles on the elliptical or five miles running. 
 
When I say lifting I should clrify that it is Bowflex and dumbell stuff. I have no interest in "mass" or "maxing out" or whatever plateheads call it these days. 
 
I want to look decent and fit in to my trousers, and live long enough to see my future grandkids. 
 
Very attainable goals, I hope. 
 
The motivation comes from that goal. 
 
Also should mention, when you don't have a belly, teh sexaytime performance is most excellent. 
You don't need meds when you are in good shape. 
So there is that motivation too.