Phobia?! Oh No!!

I have a phobia of animals, since the beginning until now I was amused to see it. Animals is cockroaches. Actually first I was not too scared by cockroach, but because I used to frequent bother by the animal one, happens to this day I still feel amused as cockroaches. Once upon a night I was soundly asleep, suddenly I felt something moving on my feet, then I woke up and realized my legs were moving cockroaches, I immediately shout.The incident did not happen only once, so no wonder to this day I still feel tingling and screaming when the animals were there before me. Actually what is the meaning phobia? what causes phobia? how to remove the sense of phobia?.
After I find out it was a phobia is an excessive fear of something. The causes can vary one of them as I experienced. how to remove the sense of phobia that is by fighting fear itself. It turned out that way relieve phobia is by fighting fear itself. If we are accustomed to seeing something that we fear, its own sense of fear it will disappear. Maybe I will try to remove the fear that now and I hope that sense of phobia will disappear forever.