If you break 90 regularly, if you go to the course and expect to shoot in the 80s, I would guess you have a near-perfect golf swing–for you.
If you swung that swing a dozen times in a row, with no ball in front of you, I would bet that every swing would be as near to the same as a dozen swings can be.
The clubface would be square all the way through, the clubpath through “impact” would be right at the target, the hands would always be leading the clubhead. Most importantly, you would swing to identical finishes each time.
In other words, perfect.
Now put down a ball and swing at it. Did that same perfect swing come out, or did your “Hit the ball!” swing come out?
This is why golf is hard. We KNOW what to do. It’s just that the ball makes us do things we know are wrong, yet we can’t help it.
At this point I would normally give you the solution. But with this, I there’s nothing I can say.
You’re going to have to figure it out by yourself, which I urge you to do because if you crack this nut, there will be no stopping you.
It’s the most important golfing skill there is.