Well, keep it well cooled, dont buy an inercooler because thoughs will void the warrenty, if you can keep it near and air conditioning vent or in an open area where it will get good air circulation, if you have it in a room, keep the door open and such, if its colder outside than inside, open a window.
I received a red ring of death for not doing any of these things in the past, when I and gotten it replaced by microsoft's services I knew I had to take care of this one so I did my research and used some common sense.