Myself I've always looked at fear as a good thing, its a healthy thing to be scared sometimes, provided you know how to overcome it.
The best way of overcoming fear of the unknown is to look for answers to it, rather then settling on the idea there's a big scary monster out their after you. And even if you don't find answers, the pursuit of looking for answers is more adult then settling on what your imagination tells you it is, after all that's what we did as children when we heard a bump in the night, but we eventually grew out of it when our parents rationalized its just the wind blowing a tree or someone getting up to use the bathroom at night.
So you can either be the kid under the covers thinking it really is a monster outside their room, or be the kid who gets up to see what it really is.
