I had the worst slice ever, it moved 50 to 60 yards every swing. I was in the trees, over roads, into people's windows. I think I lost 1000s of balls in the first few years of playing. I read tons of books, watched videos, I took lessons, and even went to a hypnotist. Nothing worked until I found a golf workbook, it was similar to work books you get in school. It had quizes and tests and even homework. This book transformed my game by teaching how to understand my swing. Every book I read and video I watched never explained why the ball went right, or left, or short, or low, or high. They just made my game worse because the put band aids on my problems, not teaching the right way to do things.
The key is to learn why YOU slice, hook, hit fat shots, or skull shots. Everyone has their own problems that need to be fixed differently for each of us.What works for me, may not work for you. We have go to the driving range and see what works and what doesn't. The key to getting better is PRACTICE.