Get over what? Examples of these random things? Get anxious over what?
I'm not always successful at properly explaining pure-obsessive OCD, but I'll give it a whirl here. It can be quite a range of things, and it can take many subjects as its targets.
This Wikipedia articledoes a decent overview. I'll expand on a couple examples given in that article. Every normal person has occasional bizarre thoughts, that normally one just discounts as just another weird thought. Examples:
1. A heterosexual man is making love with his wife when the name of his male best friend happens to flash through his mind.
2. A loving mother spots a pillow and has a momentary apprehension of infanticide.
Someone who did not suffer from OCD would likely immediately forget about #1 as just a wierd thought. One with OCD would sieze on that thought and begin obsessing about it, worrying that they were somehow out of their own control becoming gay. These obsessions are just that, obsessions. It becomes just about all he can think about. He knows logically, intellectually, that he's not gay, but he just can't shake the anxiety, the very strong fear that he's becoming gay. A mild example is George from Seinfeld who becomes worried he's becoming gay because while receiving a massage from a male masseuse he thought " 'it' moved."
With the number 2 example, a non-OCD mother who had such a thought would likely dismiss it with "what a terrible thought!" and forget about it. Again though, one with OCD would seize on it: "Oh my gosh! What if I harm my children?" She'd begin obsessing about it, worrying that somehow, out of her control, she was going to turn into a child-murderer. She loves her children and has no desire to harm them, but can't stop thinking about "what if I somehow lose control and suddenly kill them?" These obsessions snowball and can become disabling to the point of not being able to get out of bed.
Those are just two examples, the obsessions can latch onto just about any random thought and run with them. Obsessions like these, and several others had me in emotional/mental hell for months. For me, recovery was a combination of things: While medication was not the cure for me, I do believe it made the obsessions/anxiety bearable enough that I could actually tackle the problem with research, reading, introspection and therapy. I still get anxiety flare-ups occasionally once a year or so, always triggered by some random event or thought, and almost always as illogical as the two examples given, but when it happens I'm much more able to handle it now because I can see it coming and 'head it off' before it gains any momentum.
