To expose yourself to it voluntarily. The voluntarily part is essential, or people will end up more scared of it rather than less.
Hit on the head with a shovel?
By facing it
Find something of greater value which you can only attain by facing your fear. In my case it was a fear of needles. When I was pregnant and my unborn child's life depended upon it, I gladly put my arm out for blood test after blood test week after week. It's now over 27 years later and I don't mind needles one bit.
just believe that we all are destined to die one day.....
Look fear in the face... yes literally
to face it