I ain’t afraid of no ghost
If you’re seeing things
running through your head
Who can you call?
Source: Theme song of Ghostbusters
It answers the question by calling someone else.
Some people consider the ghosts personal and they try to fight them alone. Others, rely on external help but remain afraid of them. The truth, though, is that in any case there are no ghosts. A truth so universal that is easily forgotten in other domains.
We should not let our fears shape us. Not by retreating to a safer place nor by fighting them. We should choose based on rational thinking. Fear has no place there.