Do you worry yourself sick every time you get into a car?
You should ... there's a lot more car accidents per mile travelled than plane accidents. Or maybe you shouldn't worry about flying too much.
While I do feel uncomfortable when flying, I kinda stick to that thought, and it helps.

Also you're likely not to use Aeroflot or an African airline for a flight to Minneapolis ... I heard these crash slightly more often than average, which in turn means on a US domestic flight you have a below-average risk (considering the overall risk involved in civil aviation).
Why does one see plane crashes on TV? Because they're spectacular. Viewers want to see flames and firetrucks and smoke, not boring statistics about the thousands of fatal road accidents each year. Relax, try to have a good time. I find that reading (in a concentrated manner, maybe not the aircraft safety instructions but a book or magazine) during the landing helps too - basically you have a choice of watching what's going on, even if it makes you queasy; or getting into the novel and pretending you're on a bus or train.
BTW, don't applaud the pilot after the landing, only Tourists and Noobs do that

Edit: I don't want to sound like my own mother but: Make sure to drink something, it is supposed to help with the low pressure thing. You can't bring liquids into the airport, so just buy a half liter of bottled water when you're in the security zone (or drink plenty before going. I usually have two large beers and a bubblegum to cover the smell
