I don't know if I would be able to take a job for less money, even if I was unhappy with my work. I guess I am 30 and not nearing 40 like a lot of you guys, so maybe I will burn myself out more as the years go on, but I'm now dependent on what I make.
My advice is to work at a large corporation, which has a lot of places to move internally. Normally places will let you make reasonable moves, even if they are lateral, which will help keep things interesting.
My dream jobs... talk show radio host, professional baseball player, professional gambler, porn star... none of these will be happening any time soon unfortunately.