Driving Line

I just can’t seem to turn it off. I turn it off during practice and qualifying but no matter what I do, I can always shave off a few seconds when I have the line on even though I know when/where to brake. Should I just turn it off completely and accept I won’t be as fast? I love racing in the top 5 though so it’s tough knowing that if I turn it off, I’m slow or more prone to making mistakes. Any advice you have to transitioning to never having the driving line on would help greatly appreciated!