Hi there,
I'm newish to the game, so I am not preaching, but I was at the range a week or so ago for a group lesson. I explained that my irons shots were ok (ish!!), but my driver shots were, let's say, not so good. By miles!! The information I was given was to put my feet further apart. I heard "keep going, keep going", until I felt almost uncomfortable. I took a swing and the ball flew. I am sure this is not the only reason for not hitting properly, but I hope it provides food for thought.
Along with all the other advice above. I'm taking all that on board too.
Thanks to you all.