When the ball is below your feet, it will bounce and run to the right, so aim left. Stand slightly closer to the ball, and set your weight left and more in your heels. Bend more at the waist, grip the club at its full length and swing easier to adjust for the longer arc.
When the ball is above your feet, it's going to go left, so aim right. Stand slightly farther from the ball, and set your weight left but more on your toes to keep your balance. Grip down on the club, and swing a little harder to make up for the shorter swing arc.From severe sidehill lies, especially with high-lofted clubs, aim farther left or right.