Hello Tracey, I've wired many fans within walls and ceilings. First find which direction the ceiling joists are running. Ideally want to run your wire parallel along one. Then, also ideally, locate your switch so that it is between the same wall studs as an ac outlet (to pull power from)which will be in line with the ceiling wire you will run. Now, come directly up above the switch area to where the wall & ceiling meet. Cut 3x5 in. or so out of both the wall board & the ceiling.You should then see a pair of 2x4's (depending on construction)that you will have to notch out to run your wire through. You will have a total of 4 new holes. One in the ceiling for your fan, 2 where the wall and ceiling meet,another directly below those for the switch. You should, barring any surprises, be able to slide a fish tape through and pull your new wire from the outlet to the fan hole. Hope this helps.