When the ball is on an uphill or above your feet lie all you have to do is make some adjustments to your set up and stance
When golfers suffer from inconsistently hitting the ball left, right or straight, the most likely cause is leaning too far over their feet, causing poor balance
If you are practicing and start hitting bad shots then step away from the ball and work on re-establishing solid contact with a few bump shots in order to get the feel for center clubface hits