Gripping too hard

I’m getting better at keeping the airplane level and controlling altitude and speed. I keep coming back to realizing my grip is too hard. It’s like any other sport or hobby I’ve tried on my life. Grip needs to be relaxed and free to move. It’s like in golf… the club has to be loose but controlled in your hand so you can swing through your shot. Seems like its the same with flying except I keep coming back to the fact… I am gripping the yoke too tight! So, now that I’m aware of it, what am I going to do to fix it? First, I am keelinh my thumb out of the grip so I can’t squeeze it. I am also keeping the inside of my fingers facing me and trying to keep them relaxed. Im learning more each day and getting better one lesson a a time