I have been trying to get back into the game recently and many of my problems were solved with an epiphany at the range. The key for my swing at least is a full should turn where my back faces the target as much as possible at the top. When i get lazy I tend to swing too much with my arms which also causes my whole body to sway. Focusing on my shoulder turn really keeps my body steady and allows solid contact every time with good balance. Thoughts on this and how to achieve proper shoulder turn each and every time?

Left shoulder under chin, right shoulder under chin.

This is how I do it (disclaimer, I am not very good). Start your takeaway by rotating your hips and shoulders rather than pulling your arms back. If you have good posture at address your hips should stop naturally as they meet resistance, and your shoulders stop just a bit after that.

bounce right to left and let your shoouuulder lean

its more about the gut

fire with the ass cheeks imo

I agree with this. It is very key for me as well.
Thoughts on how to achieve it each and every time???
There lies the challenge!