I used to be very mechanical but really improved when I learned how to 'feel' the correct movements. They key is that everyone will feel things differently and its the understanding of that principle which helped me. For example saying start the downswing with the hips, as a feeling, wont work for someone who has fast hips

You have to experiment and find the feelings that work for you and realise that when you read an article in a magazine or book that says differently that is someone else's feeling, and may not be the right way for you personally

Mechanics allow you to get setup properly and know when you are in the right poisitions throughout the swing