I try to mix up my game playing between classics and newer games, RPGs and shmups/action/fighting/sidescrolling, portables and consoles... that, plus a lack of time to really get much gaming in, seems to keep me from getting bored. If you only play RPGs, then i don't really know what to say, it's my favorite genre (well, Japanese ones at least...) but if that was all I played, I'd probably get burnt out too.
Also if you haven't, played Resonance of Fate.
Worse comes to worse, put the video games down, go to a rave, and have a cliche life-changing experience (I don't recommend the drug aspect though, especially with your condition). Travel to a foreign country. Or even do something simple like ride bikes through trails.