If you are having troubles with some aspects of you swing, jump on a slope to help train the correction.  E.G If your path is too far out to in,try hitting some shots off a slope where the ball is above your feet.  You will naturally start to neutralize the path and shallow out the swing.  If your angle of attack is too steep try hitting some shots on an up slope, again this will change the angle of attack without you having to think too much about the technique.