get over my fears

So I am a little fearful of flying and I am off to Chicago this week, on a trip I won through school, to show me what a real job will be like: fly here//have a meeting//fly back//work//fly somewhere else//more meetings//more work// so I obviously need to get over this…here I go…

I think my fears are made up in my head and there must be a ways around them. When I was a very little girl I guess I was afraid of grass, or pretty much any vegetation, plants, flowers, you name it. Well pretty sure I got over that fast, so what changed?
Current fears: Spiders (doesn’t matter what size they are), Bugs in general creep me out, Small enclosed spaces I don’t have control to get out of at any moment, so this means: elevators, planes, crowds, etc (I still go in these things, but not without slight panic or drugs), any sort-of major surgery…none yet, hopefully never, but what are the chances? Just the thought of my life in the hands of a stranger cutting me open while I am hopefully knocked out, Yuck! I think thats it…there are small stupid things but I am already getting over them, thats why they are small and stupid.
So any tips for my current annoying fears? How can I just get out of my head?