Take Cialis and play Tiger Woods for the Wii in you underwear, while drinking scotch. It's the cure for boredom.
Seriously, I don't know what to say here. I am thinking of changing jobs myself. The fact is, I am aging. I cannot work at my current pace forever. Unless the END comes, I am screwed. So I have to change jobs. All I know is construction. So I am trying to get into a field where I can someday be less physical. At the same time, I need to work-out at a gym. That is something you might consider. The repetetive motions of construction jobs do not count as exercise. I had one job that did, but the hours were so long that it eventually became counter-productive. Imagine going to the gym 60 hours a week and never letting your body recover.
I feel your pain about education. It's a forest of mirrors when it comes to higher education. A guy like me could get taken for a lot of cash really quick. It's very confusing and daunting to consider going back to school. Still, if your wife supports you, that is a plus. If you have someone in your corner then you can succeed. Good luck, bro.