Slicing the golf ball can cause real problems in your game, whether you're a beginner or a longtime player. Slicing tends to put you in places you don't want to be, such as out of bounds and on neighboring fairways. A slice is often a symptom of your stance or trying to hit the ball too hard and having no idea of how your club face is affecting the ball. But, you don't have to live with a slice.
Take your normal address to the ball. Your stance should be comfortable without having to lean forward or extend your arm abnormally.
Drop your back hand off the club. If you're a right-handed golfer, you'll want to drop your right hand. If you're a left-handed golfer, you'll want to drop your left hand.
Bring your dropped hand back up to the club. You should not have to reach in order to put your hand back. This will tell you whether or not your stance is too spread out and if you are reaching for the ball.
Club Face Recognition
Go to the range with a 6-iron.
Hit 20 to 30 balls softly with the 6-iron, making sure that your club face is closed and the ball is going straight. Hit it no more than 30 yards at first.
Start hitting the 6-iron to about 100 yards, making sure that the ball continues its straight flight path.
Work your way up to the driver, using the same technique. Over time, you'll get a better feel for the angle of your club face at impact.