The slice is the number one problem for the average amateur golf. I suffered myself for over 3 years from a terrible slice. I had dozens of golf lessons, tried ten different golf swings, used all the latest golf swing aids ...but there was no improvement.

But there's a solution! After studying nearly everything on this topic I came across the following tip:

You may have heard of the one-piece takeaway. This is a controlled back-swing that keeps the club on the right plane. Being in the right position at the top of the backswing promotes a natural in-to-out swing which eliminates the slice. The system provides a fixpoint that gives you a connected and repeatable back-swing.

So for me it was the back-swing which caused the slice. From my observation of other slicers I learned that they turn the body in the down-swing faster than their arms. Or they turn the left shoulder (right should for lefties) to fast. The result is an out-to-in movement of the golf club and an open club face.

So if you want to cure your golf slice work on your back-swing and start your down-swing with the arms first.

Below you can find a video drill which helped me to hit my balls long and straight.