If you're vaping all day long, maybe you are "addicted" (I'm using quotes because I'm more referring to a really strong habit more than a real addiction issue) to the action of vaporizing as much as the herb. I know for tobacco I miss the habit more than the plant itself. So what about trying other plants in order to cut down on your consumption? The ethnobotanical thread has lots of examples of plants for anxiety or even pain.
You mention pain and aches, I don't know your medical situation, but taking pain meds for a short time would also be a solution to lower your needs? If your body handles them well of course.