Fear Factor

I have been making an attempt to identify my fears and find out what they are founded on and what brought in those fearful feelings.
Most of my fears are based not on cockroaches, but on less delightful creatures.
Fears can be mostly turned around or gotten rid of by analysing a previous scary encounter and chalking out what the action taken must have been like. To give you an example, if an encounter with a cockroach (of which you have great fear- assuming) caught you in the blue, you are overwhelmed with fear and are unable to respond. Once the ordeal has passed and assuming you come out alive from the encounter, you would try to go over the episode and tried to train your mind to respond to such a situation (assuming you want to, that is). A creature like a cockroach has only a limited number of ways in which it can attack or react to your attack. But if the creature you find fear-inducing is a creature of greater intelligence than a cockroach (albeit just a little more), you are caught in a loop that is best analysed by theories written by great economics geniuses of our race. The other creature thinks that, I think that, it thinks that, I think and so on.. (Or maybe my it should be -The other creature thinks, that I think, that it thinks, that I think that and so on... Either way it would make sense but in a different way. Let me think that you can think about it.)
There are certain fears that you can overcome through logical thinking (such as that of ghosts) or by over exposure ( such as of disgusting creatures), but there are some fears that cannot be overcome cause of shear inability of the human mind to take a wild guess at what is to be expected. I have no problem with unexpected twists. But it is the unpleasantness of having to deal with these creatures that has me in its grip.