Sounds like you want auto AF point selection, which picks the subject closest to the camera. Press the AF point/mode select button (top right on the back of the camera) then turn the main dial (index finger wheel) to 61-pt auto (the parentheses-like icon, all the way on the right of the top row of icons).
Personally, I prefer to use the joystick to move the AF point where I want it, rather than let the camera pick my subject for me...