I hate garage sales.
My wife is a very talented home decorator. She doesn't do it professionally but it would be hard to know that based on her passion for the subject. The problem is, She is self-taught and the learning process is not without expense.
We have spent a ton on "couldn't live without" furniture that later has been either given to family members or relegated to garage sale status for a quarter of what we paid for them. EEcchhh, I hate garage sales!
Her breakthrough in learning came after we became weary with the expense of trial and error furnishings and color schemes. The suggestion was made that she just find a decorator to work with who can put it all together.
Fortunately for us, we found a home furnishing store that allowed us to try furniture and send it back if it was unsuitable. After making a purchase, we also received free consultation from a home decorator. She and my wife bonded almost immediately and although the expenses seemed overwhelming initially, at least they will not be relegated to a garage sale in a few years.
It is the same when looking for help to improve your golf swing. You need a professional to take you where you want to go.
One of the first things that you are (or should be) taught in any exercise regimen are what are usually referred to as 'core stability exercises'. It is an essential element for establishing a foundation for functional movement. However, just doing core exercises in many cases will not translate well into functional activity without addressing timing or sequence of movement.
This requires specificity of movement. In other words, we get better at we do. So core exercises need to be properly incorporated into the activity that you need to get better at. When this happens, motor learning takes place and we require less external focus. When we move more automatically, movement becomes more efficient, producing less fatigue and consequently less proneness to injury.
We know that muscle mass, swing style and body type are less relevant to developing a consistently powerful swing compared to reprorducing the right sequence of movement. Without proper sequence of each body segment and timing of their peak velocity, your golf swing will suffer from inconsistency and your body will suffer from overstressed joints and muscles.
If you are having difficulty establishing tempo and control during your golf swing, you would do well to add a medical professional especially trained in the mechanics of the golf swing to work with you and your golf pro.