Maybe we should have a sticky on GM burn out?
1. Change game systems.
2. Play with new people.
3. Stop playing.
4. Stop GMing.
5. Read something for pleasure that's not game related and isn't on your normal list.
6. Start exercising with weights/running to get the brain flowing.
7. Prioritize your life and determine if the time/effort ratio is right for you.
8. Try running some premade adventures.
9. Try running some home brewed if you do premade.
10. Ask one of the other players to help you co-GM, taking over the role of minor NPC's, helping to run combats, etc...
11. Stop working so hard at GMing. If it feels like your eyes are bleeding everytime you put pen to paper, that's a warning sign. Find out where your trouble areas are. Is it players? Time spent playing? Inability to come up with 'original' ideasA?
12. Speaking of originality, there is nothing new under the sun. Everything is a variant.
13. Treat yourself to some new books via E-bay or in PDF format to cushion the price blow.