What many riders often do, is bending their horse inside, so the horse can’t see the scary corner.
I don’t believe that. A horse can see a lot around him, so even when you bend him inside, he will still be able to see the scary corner.
Besides that, it’s still a form of coercion.
Make sure your horse finds relaxation in the place where he has tension and that you are also very relaxed when you’re in that spot.
It’s also that your horse will get more focus on you and your aids once you progress in your training.
You will see that scary corners will come by less often and might eventually be forgotten at all.