Sometimes, especially when I hit a particularly bad slump, I actually decide to suffer extra for a few days. Why? Well... If I avoid taking certain medications for a few days, although those days are extra tough, usually it makes the medication *seem* to work better once I go back on it.
It seems weird, but it's almost as if I need that hope again, that pain relief, and if I haven't been feeling pain relief for a while, then increasing it for a couple days and then making it better sometimes works.
I just did this with my muscle relaxants last night. I hadn't taken them for a bit, so when I took one last night, it worked quickly AND really well. It felt so nice! Almost like taking it for the first time again! My pain had improved and it didn't take two or more of them to feel an effect.
Gotta do what you gotta do!