I highly recommend a spider awareness course if spiders are causing you a lot of anxiety. I've been on the Bristol Zoo one twice, once with once without the hypnotist! Bearing in mind that the only way I have ever killed a spider was when one ran over my hand, on the floor, and I threw up on it. Spider drowned, I fainted (parents not amused) this has been a lifelong phobia, one I don't want, one that does not fit with the rest of my independent, self sufficient persona.
Nobody else in my family has a fear of spiders and neither I nor my parents can remember anything spider related that happened when I was little. Quite the opposite, I loved finding frogs, grass snakes, caterpillars, bugs, etc. Apparently I even took worms for a ride on my bike! I have no idea why it started!
I can just about cope, as in not run away screaming, but the fact that I understand what my triggers are and how the spider bears no fault or grudge, doesn't stop the fight/flight response. At 50 something years of age my ability to run, lack of clear eyesight and plain, simple 'Fuck You' attitude is slowly winning the battle.
I will also 'admit' we have a Dyson purely because of its cyclone thingy. The lack of spider escape route is a very comforting thought!